How are aircraft depainted?What is the dark spot visible below the cockpit on A-10s?How often is a passenger jet aircraft painted?Why is most aircraft livery painted, rather than vinyled?Are task cards still used in aircraft maintenance?Are there differences in tool standards between aircraft manufacturers?How often is a passenger jet aircraft painted?How much does it cost to give an airliner a fresh coat of paint?Why are some airplane wings not painted?How often are heavy aircraft brake pads changed?Why are the wingtips of sailplanes painted red?How are aircraft lifespans tracked?Why are aircraft coloured in yellow during construction, repair or overhaul?How is an aircraft painted?

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How are aircraft depainted?


What is the dark spot visible below the cockpit on A-10s?How often is a passenger jet aircraft painted?Why is most aircraft livery painted, rather than vinyled?Are task cards still used in aircraft maintenance?Are there differences in tool standards between aircraft manufacturers?How often is a passenger jet aircraft painted?How much does it cost to give an airliner a fresh coat of paint?Why are some airplane wings not painted?How often are heavy aircraft brake pads changed?Why are the wingtips of sailplanes painted red?How are aircraft lifespans tracked?Why are aircraft coloured in yellow during construction, repair or overhaul?How is an aircraft painted?






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;









37















$begingroup$


There are several questions about livery changes and livery in general on this website. Yet, I fail to find information about paint removal.



As a routine maintenance for an airframe that can live for up to 30 years, livery is redone several time as explained here. When changing painting, it should be preferable to remove the old one (I'm mostly thinking about weight as a big airliners has a lot a surface to paint). Moreover, I imagine that for military aircraft changing their operation theater, paint must be redone to adapt camouflage, and thus accumulating many layers of paint may have consequences.



Given material and other aviation-specific constraints, I also imagine there are special techniques to handle any intervention on the airframe.



Is this paint removal done and if so, how?










share|improve this question











$endgroup$














  • $begingroup$
    I know tanks and other ground vehicles get new camo jobs, but I don't think aircraft do, do they? The air is the same color in either case.
    $endgroup$
    – Hosch250
    Sep 11 at 17:17










  • $begingroup$
    Tangentially related: aviation.stackexchange.com/questions/14500/…
    $endgroup$
    – user3067860
    Sep 11 at 18:38






  • 6




    $begingroup$
    @Hosch250, the air may be the same color, but the ground isn't, and military airplanes tend to spend most of their time on or very close to the ground.
    $endgroup$
    – Mark
    Sep 11 at 22:36










  • $begingroup$
    I think they typically land pretty far behind the fighting line--some planes are only based out of the US midwest and do round-trips--notably spy and bombers. They are painted to provide camouflage/mind tricks in combat (which way is the plane actually oriented, am I looking at the top or bottom) etc. Maybe I'll post my own question about this, though.
    $endgroup$
    – Hosch250
    Sep 12 at 17:53






  • 2




    $begingroup$
    @Hosch250 The US midwest is, proportionally, only a very small part of the world.
    $endgroup$
    – Lightness Races with Monica
    Sep 13 at 11:17

















37















$begingroup$


There are several questions about livery changes and livery in general on this website. Yet, I fail to find information about paint removal.



As a routine maintenance for an airframe that can live for up to 30 years, livery is redone several time as explained here. When changing painting, it should be preferable to remove the old one (I'm mostly thinking about weight as a big airliners has a lot a surface to paint). Moreover, I imagine that for military aircraft changing their operation theater, paint must be redone to adapt camouflage, and thus accumulating many layers of paint may have consequences.



Given material and other aviation-specific constraints, I also imagine there are special techniques to handle any intervention on the airframe.



Is this paint removal done and if so, how?










share|improve this question











$endgroup$














  • $begingroup$
    I know tanks and other ground vehicles get new camo jobs, but I don't think aircraft do, do they? The air is the same color in either case.
    $endgroup$
    – Hosch250
    Sep 11 at 17:17










  • $begingroup$
    Tangentially related: aviation.stackexchange.com/questions/14500/…
    $endgroup$
    – user3067860
    Sep 11 at 18:38






  • 6




    $begingroup$
    @Hosch250, the air may be the same color, but the ground isn't, and military airplanes tend to spend most of their time on or very close to the ground.
    $endgroup$
    – Mark
    Sep 11 at 22:36










  • $begingroup$
    I think they typically land pretty far behind the fighting line--some planes are only based out of the US midwest and do round-trips--notably spy and bombers. They are painted to provide camouflage/mind tricks in combat (which way is the plane actually oriented, am I looking at the top or bottom) etc. Maybe I'll post my own question about this, though.
    $endgroup$
    – Hosch250
    Sep 12 at 17:53






  • 2




    $begingroup$
    @Hosch250 The US midwest is, proportionally, only a very small part of the world.
    $endgroup$
    – Lightness Races with Monica
    Sep 13 at 11:17













37













37









37


1



$begingroup$


There are several questions about livery changes and livery in general on this website. Yet, I fail to find information about paint removal.



As a routine maintenance for an airframe that can live for up to 30 years, livery is redone several time as explained here. When changing painting, it should be preferable to remove the old one (I'm mostly thinking about weight as a big airliners has a lot a surface to paint). Moreover, I imagine that for military aircraft changing their operation theater, paint must be redone to adapt camouflage, and thus accumulating many layers of paint may have consequences.



Given material and other aviation-specific constraints, I also imagine there are special techniques to handle any intervention on the airframe.



Is this paint removal done and if so, how?










share|improve this question











$endgroup$




There are several questions about livery changes and livery in general on this website. Yet, I fail to find information about paint removal.



As a routine maintenance for an airframe that can live for up to 30 years, livery is redone several time as explained here. When changing painting, it should be preferable to remove the old one (I'm mostly thinking about weight as a big airliners has a lot a surface to paint). Moreover, I imagine that for military aircraft changing their operation theater, paint must be redone to adapt camouflage, and thus accumulating many layers of paint may have consequences.



Given material and other aviation-specific constraints, I also imagine there are special techniques to handle any intervention on the airframe.



Is this paint removal done and if so, how?







aircraft-maintenance paint livery






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Sep 12 at 19:19









chicks

1271 silver badge5 bronze badges




1271 silver badge5 bronze badges










asked Sep 11 at 5:48









Manu HManu H

13.1k14 gold badges70 silver badges161 bronze badges




13.1k14 gold badges70 silver badges161 bronze badges














  • $begingroup$
    I know tanks and other ground vehicles get new camo jobs, but I don't think aircraft do, do they? The air is the same color in either case.
    $endgroup$
    – Hosch250
    Sep 11 at 17:17










  • $begingroup$
    Tangentially related: aviation.stackexchange.com/questions/14500/…
    $endgroup$
    – user3067860
    Sep 11 at 18:38






  • 6




    $begingroup$
    @Hosch250, the air may be the same color, but the ground isn't, and military airplanes tend to spend most of their time on or very close to the ground.
    $endgroup$
    – Mark
    Sep 11 at 22:36










  • $begingroup$
    I think they typically land pretty far behind the fighting line--some planes are only based out of the US midwest and do round-trips--notably spy and bombers. They are painted to provide camouflage/mind tricks in combat (which way is the plane actually oriented, am I looking at the top or bottom) etc. Maybe I'll post my own question about this, though.
    $endgroup$
    – Hosch250
    Sep 12 at 17:53






  • 2




    $begingroup$
    @Hosch250 The US midwest is, proportionally, only a very small part of the world.
    $endgroup$
    – Lightness Races with Monica
    Sep 13 at 11:17
















  • $begingroup$
    I know tanks and other ground vehicles get new camo jobs, but I don't think aircraft do, do they? The air is the same color in either case.
    $endgroup$
    – Hosch250
    Sep 11 at 17:17










  • $begingroup$
    Tangentially related: aviation.stackexchange.com/questions/14500/…
    $endgroup$
    – user3067860
    Sep 11 at 18:38






  • 6




    $begingroup$
    @Hosch250, the air may be the same color, but the ground isn't, and military airplanes tend to spend most of their time on or very close to the ground.
    $endgroup$
    – Mark
    Sep 11 at 22:36










  • $begingroup$
    I think they typically land pretty far behind the fighting line--some planes are only based out of the US midwest and do round-trips--notably spy and bombers. They are painted to provide camouflage/mind tricks in combat (which way is the plane actually oriented, am I looking at the top or bottom) etc. Maybe I'll post my own question about this, though.
    $endgroup$
    – Hosch250
    Sep 12 at 17:53






  • 2




    $begingroup$
    @Hosch250 The US midwest is, proportionally, only a very small part of the world.
    $endgroup$
    – Lightness Races with Monica
    Sep 13 at 11:17















$begingroup$
I know tanks and other ground vehicles get new camo jobs, but I don't think aircraft do, do they? The air is the same color in either case.
$endgroup$
– Hosch250
Sep 11 at 17:17




$begingroup$
I know tanks and other ground vehicles get new camo jobs, but I don't think aircraft do, do they? The air is the same color in either case.
$endgroup$
– Hosch250
Sep 11 at 17:17












$begingroup$
Tangentially related: aviation.stackexchange.com/questions/14500/…
$endgroup$
– user3067860
Sep 11 at 18:38




$begingroup$
Tangentially related: aviation.stackexchange.com/questions/14500/…
$endgroup$
– user3067860
Sep 11 at 18:38




6




6




$begingroup$
@Hosch250, the air may be the same color, but the ground isn't, and military airplanes tend to spend most of their time on or very close to the ground.
$endgroup$
– Mark
Sep 11 at 22:36




$begingroup$
@Hosch250, the air may be the same color, but the ground isn't, and military airplanes tend to spend most of their time on or very close to the ground.
$endgroup$
– Mark
Sep 11 at 22:36












$begingroup$
I think they typically land pretty far behind the fighting line--some planes are only based out of the US midwest and do round-trips--notably spy and bombers. They are painted to provide camouflage/mind tricks in combat (which way is the plane actually oriented, am I looking at the top or bottom) etc. Maybe I'll post my own question about this, though.
$endgroup$
– Hosch250
Sep 12 at 17:53




$begingroup$
I think they typically land pretty far behind the fighting line--some planes are only based out of the US midwest and do round-trips--notably spy and bombers. They are painted to provide camouflage/mind tricks in combat (which way is the plane actually oriented, am I looking at the top or bottom) etc. Maybe I'll post my own question about this, though.
$endgroup$
– Hosch250
Sep 12 at 17:53




2




2




$begingroup$
@Hosch250 The US midwest is, proportionally, only a very small part of the world.
$endgroup$
– Lightness Races with Monica
Sep 13 at 11:17




$begingroup$
@Hosch250 The US midwest is, proportionally, only a very small part of the world.
$endgroup$
– Lightness Races with Monica
Sep 13 at 11:17










4 Answers
4






active

oldest

votes


















65

















$begingroup$

Paint stripper. Lots of paint stripper.
(originally I said thinner, but I have been corrected, it's more accurately called stripper)



Seriously though, it's actually not too different to other things that you paint. You need to spray on paint stripper. But, just like when painting the aircraft, it's imperative that you cover up all the delicate systems on the aircraft fuselage.



See here:






Also, I think it would be rare to paint a new livery over and existing one without first removing the old paint (maybe only if you were just changing small details), because covering an aircraft in paint weighs A LOT. For a 747 or 777 sized aircraft the paint job can weigh over 1000lbs



Carrying that around costs fuel and fuel costs a lot!






share|improve this answer












$endgroup$










  • 13




    $begingroup$
    Welcome to Aviation.SE! Nice first contribution, I hope you stick around.
    $endgroup$
    – AEhere supports Monica
    Sep 11 at 8:09






  • 12




    $begingroup$
    When my plane was repainted in fall in 2018, paint stripper was used. Hydrogen peroxide based, it took everything off. crossroadsfencing.com/airplane/painting%20pics/IMG_0200.JPG After sitting overnight, the plane is rinsed and the wastewater collected in barrels to be shipped off and processed somehow. Some areas needed a 2nd application to get down to bare aluminum crossroadsfencing.com/airplane/painting%20pics/IMG_0202.JPG
    $endgroup$
    – CrossRoads
    Sep 11 at 12:13






  • 2




    $begingroup$
    Paint thinner is mineral spirits (Stoddard solvent) which may have been washed, i.e. recycled. Paint stripper is an organic solvent mixed with wax to slow evaporation; the solvent penetrates the paint and causes bubbling as it evaporates lifting the paint. Methylene chloride and NMP are common. The stripper in the video is a combination of solvent and caustic compounds such as lye that actually dissolve cured paint. You won't find them at the local hardware store because they also dissolve the lignum in wood, but they are sold to shipyards, and I assume, aircraft painters.
    $endgroup$
    – Matthew Gauthier
    Sep 11 at 15:37






  • 2




    $begingroup$
    If I had to guess the stuff they are using in that video is called, "Aircraft Stripper". IN cycling, if you paint your frame, you can remove baked on coatings with it as well. For a consumer, you can buy small jugs, of it. It's basically a corrosive chemical that bubbles the paint off. Example: kleanstrip.com/product/aircraft-paint-remover
    $endgroup$
    – knocked loose
    Sep 11 at 19:04







  • 3




    $begingroup$
    Stoddard solvent is a mild case of a paint thinner. More serious ones: Acetone, Nitrocellulose thinner, Methyl-Ethyl Ketone (MEK), Stabilised Tetrahydrofurane (THF)....
    $endgroup$
    – rackandboneman
    Sep 11 at 20:13


















30

















$begingroup$

In addition to the chemical method in Simon's answer, there are mechanical methods, like bead blasting. This method was introduced in the 80s by airforces concerned with the volume of chemical waste generated by their maintenance facilities.








It essentially consists of using compressed air to project fine plastic particles against the painted part at high speed. These abrade the paint away mechanically and can be recycled a few times before they break down too much and become ineffective. Glass particles can also be used for more heavy duty blasting, but these need more careful procedures to avoid damaging the substrate, since they are much harder than plastic.



Abrasive blasting not only removes paint, but also dirt, corrosion and even anodic coatings, with enough passes.



Whether it has any advantages over chemical stripping, depends on the specific case. Industry regulations change across time and space, and waste plastic dust might be more problematic than waste chemicals in some places, but not others. Also, the size of the parts to be stripped and the kind of training required for the operators play a significant role in choosing one method over another.






share|improve this answer










$endgroup$










  • 5




    $begingroup$
    Baking Soda blasting is another method for mechanical removal. youtube.com/watch?v=lub0D1pX_xo
    $endgroup$
    – CrossRoads
    Sep 11 at 12:02










  • $begingroup$
    @CrossRoads same principle, different blasting agent.
    $endgroup$
    – jwenting
    Sep 12 at 4:38


















15

















$begingroup$

Not to be a smart-ass, but I think the correct answer is "in accordance with the airframe manufacturer's instructions."



Aircraft are generally given a corrosion protective layer (or passivated) at the time of manufacture that usually gives them a green color before they are painted. For this reason, unpainted planes are sometimes called "green" planes. Historically the treatment was usually a zinc chromate primer, but that is highly toxic and I doubt anybody still uses it on new planes. I suspect some of the more modern treatments add green pigments just to give the green planes the expected look, but I don't actually know that.



Following manufacturer instruction on whether and how to use chemical strippers or mechanical removal of paint is important to not damage the protective layer in ways not expected by the manufacturer. Some treatments require parts to be dipped in a chemical bath before assembly, so if you remove or damage that treatment layer, you're not likely to be able to restore the corrosion protection to an as-new status. If you remove the protection and replace it with your own in a way not specifically approved by the manufacturer, your plane no longer is in full compliance with the type certificate and you've become something of a test pilot.



TL;DR: Don't do stuff to planes that isn't approved by the manufacturer or a supplemental type certificate applicable to your specific plane.






share|improve this answer










$endgroup$










  • 5




    $begingroup$
    Stripped planes are taken down to bare aluminim. The AL is then washed, acid etched (something like a mild vinegar), alodyne applied, then primer (the green color), then paint. The stripper doesn't know to stop at the primer level. This was mine after the alodyne stage, before primer crossroadsfencing.com/airplane/painting%20pics/IMG_0311.JPG
    $endgroup$
    – CrossRoads
    Sep 12 at 11:59











  • $begingroup$
    @CrossRoads Reminds me of a DeLorean :-) but I'm afraid it lacks the Flux Capacitor.
    $endgroup$
    – PerlDuck
    Sep 12 at 17:46










  • $begingroup$
    Well, that and stainless steel :)
    $endgroup$
    – CrossRoads
    Sep 12 at 18:52










  • $begingroup$
    Yes, @CrossRoads, but the look is awesome!
    $endgroup$
    – PerlDuck
    Sep 12 at 18:57










  • $begingroup$
    The green layer is just a temporary protection that gets stripped before the aircraft is painted.
    $endgroup$
    – fooot
    Sep 16 at 15:20


















8

















$begingroup$

There are other methods in addition to the chemical and mechanical ones already mentioned in other answers. In some cases, paint is removed from aircraft using a laser.



Here's a video I found from the US Air Force that demonstrates the process:









share|improve this answer










$endgroup$










  • 1




    $begingroup$
    F16, 25 hours for 2 robots. C130, 75 hours for 4 robots. Bet a Cessna would be pricey, if one could get time at an AF base to have it done.
    $endgroup$
    – CrossRoads
    Sep 12 at 16:14












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4 Answers
4






active

oldest

votes








4 Answers
4






active

oldest

votes









active

oldest

votes






active

oldest

votes









65

















$begingroup$

Paint stripper. Lots of paint stripper.
(originally I said thinner, but I have been corrected, it's more accurately called stripper)



Seriously though, it's actually not too different to other things that you paint. You need to spray on paint stripper. But, just like when painting the aircraft, it's imperative that you cover up all the delicate systems on the aircraft fuselage.



See here:






Also, I think it would be rare to paint a new livery over and existing one without first removing the old paint (maybe only if you were just changing small details), because covering an aircraft in paint weighs A LOT. For a 747 or 777 sized aircraft the paint job can weigh over 1000lbs



Carrying that around costs fuel and fuel costs a lot!






share|improve this answer












$endgroup$










  • 13




    $begingroup$
    Welcome to Aviation.SE! Nice first contribution, I hope you stick around.
    $endgroup$
    – AEhere supports Monica
    Sep 11 at 8:09






  • 12




    $begingroup$
    When my plane was repainted in fall in 2018, paint stripper was used. Hydrogen peroxide based, it took everything off. crossroadsfencing.com/airplane/painting%20pics/IMG_0200.JPG After sitting overnight, the plane is rinsed and the wastewater collected in barrels to be shipped off and processed somehow. Some areas needed a 2nd application to get down to bare aluminum crossroadsfencing.com/airplane/painting%20pics/IMG_0202.JPG
    $endgroup$
    – CrossRoads
    Sep 11 at 12:13






  • 2




    $begingroup$
    Paint thinner is mineral spirits (Stoddard solvent) which may have been washed, i.e. recycled. Paint stripper is an organic solvent mixed with wax to slow evaporation; the solvent penetrates the paint and causes bubbling as it evaporates lifting the paint. Methylene chloride and NMP are common. The stripper in the video is a combination of solvent and caustic compounds such as lye that actually dissolve cured paint. You won't find them at the local hardware store because they also dissolve the lignum in wood, but they are sold to shipyards, and I assume, aircraft painters.
    $endgroup$
    – Matthew Gauthier
    Sep 11 at 15:37






  • 2




    $begingroup$
    If I had to guess the stuff they are using in that video is called, "Aircraft Stripper". IN cycling, if you paint your frame, you can remove baked on coatings with it as well. For a consumer, you can buy small jugs, of it. It's basically a corrosive chemical that bubbles the paint off. Example: kleanstrip.com/product/aircraft-paint-remover
    $endgroup$
    – knocked loose
    Sep 11 at 19:04







  • 3




    $begingroup$
    Stoddard solvent is a mild case of a paint thinner. More serious ones: Acetone, Nitrocellulose thinner, Methyl-Ethyl Ketone (MEK), Stabilised Tetrahydrofurane (THF)....
    $endgroup$
    – rackandboneman
    Sep 11 at 20:13















65

















$begingroup$

Paint stripper. Lots of paint stripper.
(originally I said thinner, but I have been corrected, it's more accurately called stripper)



Seriously though, it's actually not too different to other things that you paint. You need to spray on paint stripper. But, just like when painting the aircraft, it's imperative that you cover up all the delicate systems on the aircraft fuselage.



See here:






Also, I think it would be rare to paint a new livery over and existing one without first removing the old paint (maybe only if you were just changing small details), because covering an aircraft in paint weighs A LOT. For a 747 or 777 sized aircraft the paint job can weigh over 1000lbs



Carrying that around costs fuel and fuel costs a lot!






share|improve this answer












$endgroup$










  • 13




    $begingroup$
    Welcome to Aviation.SE! Nice first contribution, I hope you stick around.
    $endgroup$
    – AEhere supports Monica
    Sep 11 at 8:09






  • 12




    $begingroup$
    When my plane was repainted in fall in 2018, paint stripper was used. Hydrogen peroxide based, it took everything off. crossroadsfencing.com/airplane/painting%20pics/IMG_0200.JPG After sitting overnight, the plane is rinsed and the wastewater collected in barrels to be shipped off and processed somehow. Some areas needed a 2nd application to get down to bare aluminum crossroadsfencing.com/airplane/painting%20pics/IMG_0202.JPG
    $endgroup$
    – CrossRoads
    Sep 11 at 12:13






  • 2




    $begingroup$
    Paint thinner is mineral spirits (Stoddard solvent) which may have been washed, i.e. recycled. Paint stripper is an organic solvent mixed with wax to slow evaporation; the solvent penetrates the paint and causes bubbling as it evaporates lifting the paint. Methylene chloride and NMP are common. The stripper in the video is a combination of solvent and caustic compounds such as lye that actually dissolve cured paint. You won't find them at the local hardware store because they also dissolve the lignum in wood, but they are sold to shipyards, and I assume, aircraft painters.
    $endgroup$
    – Matthew Gauthier
    Sep 11 at 15:37






  • 2




    $begingroup$
    If I had to guess the stuff they are using in that video is called, "Aircraft Stripper". IN cycling, if you paint your frame, you can remove baked on coatings with it as well. For a consumer, you can buy small jugs, of it. It's basically a corrosive chemical that bubbles the paint off. Example: kleanstrip.com/product/aircraft-paint-remover
    $endgroup$
    – knocked loose
    Sep 11 at 19:04







  • 3




    $begingroup$
    Stoddard solvent is a mild case of a paint thinner. More serious ones: Acetone, Nitrocellulose thinner, Methyl-Ethyl Ketone (MEK), Stabilised Tetrahydrofurane (THF)....
    $endgroup$
    – rackandboneman
    Sep 11 at 20:13













65















65











65







$begingroup$

Paint stripper. Lots of paint stripper.
(originally I said thinner, but I have been corrected, it's more accurately called stripper)



Seriously though, it's actually not too different to other things that you paint. You need to spray on paint stripper. But, just like when painting the aircraft, it's imperative that you cover up all the delicate systems on the aircraft fuselage.



See here:






Also, I think it would be rare to paint a new livery over and existing one without first removing the old paint (maybe only if you were just changing small details), because covering an aircraft in paint weighs A LOT. For a 747 or 777 sized aircraft the paint job can weigh over 1000lbs



Carrying that around costs fuel and fuel costs a lot!






share|improve this answer












$endgroup$



Paint stripper. Lots of paint stripper.
(originally I said thinner, but I have been corrected, it's more accurately called stripper)



Seriously though, it's actually not too different to other things that you paint. You need to spray on paint stripper. But, just like when painting the aircraft, it's imperative that you cover up all the delicate systems on the aircraft fuselage.



See here:






Also, I think it would be rare to paint a new livery over and existing one without first removing the old paint (maybe only if you were just changing small details), because covering an aircraft in paint weighs A LOT. For a 747 or 777 sized aircraft the paint job can weigh over 1000lbs



Carrying that around costs fuel and fuel costs a lot!















share|improve this answer















share|improve this answer




share|improve this answer








edited Sep 11 at 20:44

























answered Sep 11 at 7:04









Simon OpitSimon Opit

6213 silver badges6 bronze badges




6213 silver badges6 bronze badges










  • 13




    $begingroup$
    Welcome to Aviation.SE! Nice first contribution, I hope you stick around.
    $endgroup$
    – AEhere supports Monica
    Sep 11 at 8:09






  • 12




    $begingroup$
    When my plane was repainted in fall in 2018, paint stripper was used. Hydrogen peroxide based, it took everything off. crossroadsfencing.com/airplane/painting%20pics/IMG_0200.JPG After sitting overnight, the plane is rinsed and the wastewater collected in barrels to be shipped off and processed somehow. Some areas needed a 2nd application to get down to bare aluminum crossroadsfencing.com/airplane/painting%20pics/IMG_0202.JPG
    $endgroup$
    – CrossRoads
    Sep 11 at 12:13






  • 2




    $begingroup$
    Paint thinner is mineral spirits (Stoddard solvent) which may have been washed, i.e. recycled. Paint stripper is an organic solvent mixed with wax to slow evaporation; the solvent penetrates the paint and causes bubbling as it evaporates lifting the paint. Methylene chloride and NMP are common. The stripper in the video is a combination of solvent and caustic compounds such as lye that actually dissolve cured paint. You won't find them at the local hardware store because they also dissolve the lignum in wood, but they are sold to shipyards, and I assume, aircraft painters.
    $endgroup$
    – Matthew Gauthier
    Sep 11 at 15:37






  • 2




    $begingroup$
    If I had to guess the stuff they are using in that video is called, "Aircraft Stripper". IN cycling, if you paint your frame, you can remove baked on coatings with it as well. For a consumer, you can buy small jugs, of it. It's basically a corrosive chemical that bubbles the paint off. Example: kleanstrip.com/product/aircraft-paint-remover
    $endgroup$
    – knocked loose
    Sep 11 at 19:04







  • 3




    $begingroup$
    Stoddard solvent is a mild case of a paint thinner. More serious ones: Acetone, Nitrocellulose thinner, Methyl-Ethyl Ketone (MEK), Stabilised Tetrahydrofurane (THF)....
    $endgroup$
    – rackandboneman
    Sep 11 at 20:13












  • 13




    $begingroup$
    Welcome to Aviation.SE! Nice first contribution, I hope you stick around.
    $endgroup$
    – AEhere supports Monica
    Sep 11 at 8:09






  • 12




    $begingroup$
    When my plane was repainted in fall in 2018, paint stripper was used. Hydrogen peroxide based, it took everything off. crossroadsfencing.com/airplane/painting%20pics/IMG_0200.JPG After sitting overnight, the plane is rinsed and the wastewater collected in barrels to be shipped off and processed somehow. Some areas needed a 2nd application to get down to bare aluminum crossroadsfencing.com/airplane/painting%20pics/IMG_0202.JPG
    $endgroup$
    – CrossRoads
    Sep 11 at 12:13






  • 2




    $begingroup$
    Paint thinner is mineral spirits (Stoddard solvent) which may have been washed, i.e. recycled. Paint stripper is an organic solvent mixed with wax to slow evaporation; the solvent penetrates the paint and causes bubbling as it evaporates lifting the paint. Methylene chloride and NMP are common. The stripper in the video is a combination of solvent and caustic compounds such as lye that actually dissolve cured paint. You won't find them at the local hardware store because they also dissolve the lignum in wood, but they are sold to shipyards, and I assume, aircraft painters.
    $endgroup$
    – Matthew Gauthier
    Sep 11 at 15:37






  • 2




    $begingroup$
    If I had to guess the stuff they are using in that video is called, "Aircraft Stripper". IN cycling, if you paint your frame, you can remove baked on coatings with it as well. For a consumer, you can buy small jugs, of it. It's basically a corrosive chemical that bubbles the paint off. Example: kleanstrip.com/product/aircraft-paint-remover
    $endgroup$
    – knocked loose
    Sep 11 at 19:04







  • 3




    $begingroup$
    Stoddard solvent is a mild case of a paint thinner. More serious ones: Acetone, Nitrocellulose thinner, Methyl-Ethyl Ketone (MEK), Stabilised Tetrahydrofurane (THF)....
    $endgroup$
    – rackandboneman
    Sep 11 at 20:13







13




13




$begingroup$
Welcome to Aviation.SE! Nice first contribution, I hope you stick around.
$endgroup$
– AEhere supports Monica
Sep 11 at 8:09




$begingroup$
Welcome to Aviation.SE! Nice first contribution, I hope you stick around.
$endgroup$
– AEhere supports Monica
Sep 11 at 8:09




12




12




$begingroup$
When my plane was repainted in fall in 2018, paint stripper was used. Hydrogen peroxide based, it took everything off. crossroadsfencing.com/airplane/painting%20pics/IMG_0200.JPG After sitting overnight, the plane is rinsed and the wastewater collected in barrels to be shipped off and processed somehow. Some areas needed a 2nd application to get down to bare aluminum crossroadsfencing.com/airplane/painting%20pics/IMG_0202.JPG
$endgroup$
– CrossRoads
Sep 11 at 12:13




$begingroup$
When my plane was repainted in fall in 2018, paint stripper was used. Hydrogen peroxide based, it took everything off. crossroadsfencing.com/airplane/painting%20pics/IMG_0200.JPG After sitting overnight, the plane is rinsed and the wastewater collected in barrels to be shipped off and processed somehow. Some areas needed a 2nd application to get down to bare aluminum crossroadsfencing.com/airplane/painting%20pics/IMG_0202.JPG
$endgroup$
– CrossRoads
Sep 11 at 12:13




2




2




$begingroup$
Paint thinner is mineral spirits (Stoddard solvent) which may have been washed, i.e. recycled. Paint stripper is an organic solvent mixed with wax to slow evaporation; the solvent penetrates the paint and causes bubbling as it evaporates lifting the paint. Methylene chloride and NMP are common. The stripper in the video is a combination of solvent and caustic compounds such as lye that actually dissolve cured paint. You won't find them at the local hardware store because they also dissolve the lignum in wood, but they are sold to shipyards, and I assume, aircraft painters.
$endgroup$
– Matthew Gauthier
Sep 11 at 15:37




$begingroup$
Paint thinner is mineral spirits (Stoddard solvent) which may have been washed, i.e. recycled. Paint stripper is an organic solvent mixed with wax to slow evaporation; the solvent penetrates the paint and causes bubbling as it evaporates lifting the paint. Methylene chloride and NMP are common. The stripper in the video is a combination of solvent and caustic compounds such as lye that actually dissolve cured paint. You won't find them at the local hardware store because they also dissolve the lignum in wood, but they are sold to shipyards, and I assume, aircraft painters.
$endgroup$
– Matthew Gauthier
Sep 11 at 15:37




2




2




$begingroup$
If I had to guess the stuff they are using in that video is called, "Aircraft Stripper". IN cycling, if you paint your frame, you can remove baked on coatings with it as well. For a consumer, you can buy small jugs, of it. It's basically a corrosive chemical that bubbles the paint off. Example: kleanstrip.com/product/aircraft-paint-remover
$endgroup$
– knocked loose
Sep 11 at 19:04





$begingroup$
If I had to guess the stuff they are using in that video is called, "Aircraft Stripper". IN cycling, if you paint your frame, you can remove baked on coatings with it as well. For a consumer, you can buy small jugs, of it. It's basically a corrosive chemical that bubbles the paint off. Example: kleanstrip.com/product/aircraft-paint-remover
$endgroup$
– knocked loose
Sep 11 at 19:04





3




3




$begingroup$
Stoddard solvent is a mild case of a paint thinner. More serious ones: Acetone, Nitrocellulose thinner, Methyl-Ethyl Ketone (MEK), Stabilised Tetrahydrofurane (THF)....
$endgroup$
– rackandboneman
Sep 11 at 20:13




$begingroup$
Stoddard solvent is a mild case of a paint thinner. More serious ones: Acetone, Nitrocellulose thinner, Methyl-Ethyl Ketone (MEK), Stabilised Tetrahydrofurane (THF)....
$endgroup$
– rackandboneman
Sep 11 at 20:13













30

















$begingroup$

In addition to the chemical method in Simon's answer, there are mechanical methods, like bead blasting. This method was introduced in the 80s by airforces concerned with the volume of chemical waste generated by their maintenance facilities.








It essentially consists of using compressed air to project fine plastic particles against the painted part at high speed. These abrade the paint away mechanically and can be recycled a few times before they break down too much and become ineffective. Glass particles can also be used for more heavy duty blasting, but these need more careful procedures to avoid damaging the substrate, since they are much harder than plastic.



Abrasive blasting not only removes paint, but also dirt, corrosion and even anodic coatings, with enough passes.



Whether it has any advantages over chemical stripping, depends on the specific case. Industry regulations change across time and space, and waste plastic dust might be more problematic than waste chemicals in some places, but not others. Also, the size of the parts to be stripped and the kind of training required for the operators play a significant role in choosing one method over another.






share|improve this answer










$endgroup$










  • 5




    $begingroup$
    Baking Soda blasting is another method for mechanical removal. youtube.com/watch?v=lub0D1pX_xo
    $endgroup$
    – CrossRoads
    Sep 11 at 12:02










  • $begingroup$
    @CrossRoads same principle, different blasting agent.
    $endgroup$
    – jwenting
    Sep 12 at 4:38















30

















$begingroup$

In addition to the chemical method in Simon's answer, there are mechanical methods, like bead blasting. This method was introduced in the 80s by airforces concerned with the volume of chemical waste generated by their maintenance facilities.








It essentially consists of using compressed air to project fine plastic particles against the painted part at high speed. These abrade the paint away mechanically and can be recycled a few times before they break down too much and become ineffective. Glass particles can also be used for more heavy duty blasting, but these need more careful procedures to avoid damaging the substrate, since they are much harder than plastic.



Abrasive blasting not only removes paint, but also dirt, corrosion and even anodic coatings, with enough passes.



Whether it has any advantages over chemical stripping, depends on the specific case. Industry regulations change across time and space, and waste plastic dust might be more problematic than waste chemicals in some places, but not others. Also, the size of the parts to be stripped and the kind of training required for the operators play a significant role in choosing one method over another.






share|improve this answer










$endgroup$










  • 5




    $begingroup$
    Baking Soda blasting is another method for mechanical removal. youtube.com/watch?v=lub0D1pX_xo
    $endgroup$
    – CrossRoads
    Sep 11 at 12:02










  • $begingroup$
    @CrossRoads same principle, different blasting agent.
    $endgroup$
    – jwenting
    Sep 12 at 4:38













30















30











30







$begingroup$

In addition to the chemical method in Simon's answer, there are mechanical methods, like bead blasting. This method was introduced in the 80s by airforces concerned with the volume of chemical waste generated by their maintenance facilities.








It essentially consists of using compressed air to project fine plastic particles against the painted part at high speed. These abrade the paint away mechanically and can be recycled a few times before they break down too much and become ineffective. Glass particles can also be used for more heavy duty blasting, but these need more careful procedures to avoid damaging the substrate, since they are much harder than plastic.



Abrasive blasting not only removes paint, but also dirt, corrosion and even anodic coatings, with enough passes.



Whether it has any advantages over chemical stripping, depends on the specific case. Industry regulations change across time and space, and waste plastic dust might be more problematic than waste chemicals in some places, but not others. Also, the size of the parts to be stripped and the kind of training required for the operators play a significant role in choosing one method over another.






share|improve this answer










$endgroup$



In addition to the chemical method in Simon's answer, there are mechanical methods, like bead blasting. This method was introduced in the 80s by airforces concerned with the volume of chemical waste generated by their maintenance facilities.








It essentially consists of using compressed air to project fine plastic particles against the painted part at high speed. These abrade the paint away mechanically and can be recycled a few times before they break down too much and become ineffective. Glass particles can also be used for more heavy duty blasting, but these need more careful procedures to avoid damaging the substrate, since they are much harder than plastic.



Abrasive blasting not only removes paint, but also dirt, corrosion and even anodic coatings, with enough passes.



Whether it has any advantages over chemical stripping, depends on the specific case. Industry regulations change across time and space, and waste plastic dust might be more problematic than waste chemicals in some places, but not others. Also, the size of the parts to be stripped and the kind of training required for the operators play a significant role in choosing one method over another.















share|improve this answer













share|improve this answer




share|improve this answer










answered Sep 11 at 7:53









AEhere supports MonicaAEhere supports Monica

6,7981 gold badge26 silver badges62 bronze badges




6,7981 gold badge26 silver badges62 bronze badges










  • 5




    $begingroup$
    Baking Soda blasting is another method for mechanical removal. youtube.com/watch?v=lub0D1pX_xo
    $endgroup$
    – CrossRoads
    Sep 11 at 12:02










  • $begingroup$
    @CrossRoads same principle, different blasting agent.
    $endgroup$
    – jwenting
    Sep 12 at 4:38












  • 5




    $begingroup$
    Baking Soda blasting is another method for mechanical removal. youtube.com/watch?v=lub0D1pX_xo
    $endgroup$
    – CrossRoads
    Sep 11 at 12:02










  • $begingroup$
    @CrossRoads same principle, different blasting agent.
    $endgroup$
    – jwenting
    Sep 12 at 4:38







5




5




$begingroup$
Baking Soda blasting is another method for mechanical removal. youtube.com/watch?v=lub0D1pX_xo
$endgroup$
– CrossRoads
Sep 11 at 12:02




$begingroup$
Baking Soda blasting is another method for mechanical removal. youtube.com/watch?v=lub0D1pX_xo
$endgroup$
– CrossRoads
Sep 11 at 12:02












$begingroup$
@CrossRoads same principle, different blasting agent.
$endgroup$
– jwenting
Sep 12 at 4:38




$begingroup$
@CrossRoads same principle, different blasting agent.
$endgroup$
– jwenting
Sep 12 at 4:38











15

















$begingroup$

Not to be a smart-ass, but I think the correct answer is "in accordance with the airframe manufacturer's instructions."



Aircraft are generally given a corrosion protective layer (or passivated) at the time of manufacture that usually gives them a green color before they are painted. For this reason, unpainted planes are sometimes called "green" planes. Historically the treatment was usually a zinc chromate primer, but that is highly toxic and I doubt anybody still uses it on new planes. I suspect some of the more modern treatments add green pigments just to give the green planes the expected look, but I don't actually know that.



Following manufacturer instruction on whether and how to use chemical strippers or mechanical removal of paint is important to not damage the protective layer in ways not expected by the manufacturer. Some treatments require parts to be dipped in a chemical bath before assembly, so if you remove or damage that treatment layer, you're not likely to be able to restore the corrosion protection to an as-new status. If you remove the protection and replace it with your own in a way not specifically approved by the manufacturer, your plane no longer is in full compliance with the type certificate and you've become something of a test pilot.



TL;DR: Don't do stuff to planes that isn't approved by the manufacturer or a supplemental type certificate applicable to your specific plane.






share|improve this answer










$endgroup$










  • 5




    $begingroup$
    Stripped planes are taken down to bare aluminim. The AL is then washed, acid etched (something like a mild vinegar), alodyne applied, then primer (the green color), then paint. The stripper doesn't know to stop at the primer level. This was mine after the alodyne stage, before primer crossroadsfencing.com/airplane/painting%20pics/IMG_0311.JPG
    $endgroup$
    – CrossRoads
    Sep 12 at 11:59











  • $begingroup$
    @CrossRoads Reminds me of a DeLorean :-) but I'm afraid it lacks the Flux Capacitor.
    $endgroup$
    – PerlDuck
    Sep 12 at 17:46










  • $begingroup$
    Well, that and stainless steel :)
    $endgroup$
    – CrossRoads
    Sep 12 at 18:52










  • $begingroup$
    Yes, @CrossRoads, but the look is awesome!
    $endgroup$
    – PerlDuck
    Sep 12 at 18:57










  • $begingroup$
    The green layer is just a temporary protection that gets stripped before the aircraft is painted.
    $endgroup$
    – fooot
    Sep 16 at 15:20















15

















$begingroup$

Not to be a smart-ass, but I think the correct answer is "in accordance with the airframe manufacturer's instructions."



Aircraft are generally given a corrosion protective layer (or passivated) at the time of manufacture that usually gives them a green color before they are painted. For this reason, unpainted planes are sometimes called "green" planes. Historically the treatment was usually a zinc chromate primer, but that is highly toxic and I doubt anybody still uses it on new planes. I suspect some of the more modern treatments add green pigments just to give the green planes the expected look, but I don't actually know that.



Following manufacturer instruction on whether and how to use chemical strippers or mechanical removal of paint is important to not damage the protective layer in ways not expected by the manufacturer. Some treatments require parts to be dipped in a chemical bath before assembly, so if you remove or damage that treatment layer, you're not likely to be able to restore the corrosion protection to an as-new status. If you remove the protection and replace it with your own in a way not specifically approved by the manufacturer, your plane no longer is in full compliance with the type certificate and you've become something of a test pilot.



TL;DR: Don't do stuff to planes that isn't approved by the manufacturer or a supplemental type certificate applicable to your specific plane.






share|improve this answer










$endgroup$










  • 5




    $begingroup$
    Stripped planes are taken down to bare aluminim. The AL is then washed, acid etched (something like a mild vinegar), alodyne applied, then primer (the green color), then paint. The stripper doesn't know to stop at the primer level. This was mine after the alodyne stage, before primer crossroadsfencing.com/airplane/painting%20pics/IMG_0311.JPG
    $endgroup$
    – CrossRoads
    Sep 12 at 11:59











  • $begingroup$
    @CrossRoads Reminds me of a DeLorean :-) but I'm afraid it lacks the Flux Capacitor.
    $endgroup$
    – PerlDuck
    Sep 12 at 17:46










  • $begingroup$
    Well, that and stainless steel :)
    $endgroup$
    – CrossRoads
    Sep 12 at 18:52










  • $begingroup$
    Yes, @CrossRoads, but the look is awesome!
    $endgroup$
    – PerlDuck
    Sep 12 at 18:57










  • $begingroup$
    The green layer is just a temporary protection that gets stripped before the aircraft is painted.
    $endgroup$
    – fooot
    Sep 16 at 15:20













15















15











15







$begingroup$

Not to be a smart-ass, but I think the correct answer is "in accordance with the airframe manufacturer's instructions."



Aircraft are generally given a corrosion protective layer (or passivated) at the time of manufacture that usually gives them a green color before they are painted. For this reason, unpainted planes are sometimes called "green" planes. Historically the treatment was usually a zinc chromate primer, but that is highly toxic and I doubt anybody still uses it on new planes. I suspect some of the more modern treatments add green pigments just to give the green planes the expected look, but I don't actually know that.



Following manufacturer instruction on whether and how to use chemical strippers or mechanical removal of paint is important to not damage the protective layer in ways not expected by the manufacturer. Some treatments require parts to be dipped in a chemical bath before assembly, so if you remove or damage that treatment layer, you're not likely to be able to restore the corrosion protection to an as-new status. If you remove the protection and replace it with your own in a way not specifically approved by the manufacturer, your plane no longer is in full compliance with the type certificate and you've become something of a test pilot.



TL;DR: Don't do stuff to planes that isn't approved by the manufacturer or a supplemental type certificate applicable to your specific plane.






share|improve this answer










$endgroup$



Not to be a smart-ass, but I think the correct answer is "in accordance with the airframe manufacturer's instructions."



Aircraft are generally given a corrosion protective layer (or passivated) at the time of manufacture that usually gives them a green color before they are painted. For this reason, unpainted planes are sometimes called "green" planes. Historically the treatment was usually a zinc chromate primer, but that is highly toxic and I doubt anybody still uses it on new planes. I suspect some of the more modern treatments add green pigments just to give the green planes the expected look, but I don't actually know that.



Following manufacturer instruction on whether and how to use chemical strippers or mechanical removal of paint is important to not damage the protective layer in ways not expected by the manufacturer. Some treatments require parts to be dipped in a chemical bath before assembly, so if you remove or damage that treatment layer, you're not likely to be able to restore the corrosion protection to an as-new status. If you remove the protection and replace it with your own in a way not specifically approved by the manufacturer, your plane no longer is in full compliance with the type certificate and you've become something of a test pilot.



TL;DR: Don't do stuff to planes that isn't approved by the manufacturer or a supplemental type certificate applicable to your specific plane.







share|improve this answer













share|improve this answer




share|improve this answer










answered Sep 11 at 20:40









DCP123DCP123

1672 bronze badges




1672 bronze badges










  • 5




    $begingroup$
    Stripped planes are taken down to bare aluminim. The AL is then washed, acid etched (something like a mild vinegar), alodyne applied, then primer (the green color), then paint. The stripper doesn't know to stop at the primer level. This was mine after the alodyne stage, before primer crossroadsfencing.com/airplane/painting%20pics/IMG_0311.JPG
    $endgroup$
    – CrossRoads
    Sep 12 at 11:59











  • $begingroup$
    @CrossRoads Reminds me of a DeLorean :-) but I'm afraid it lacks the Flux Capacitor.
    $endgroup$
    – PerlDuck
    Sep 12 at 17:46










  • $begingroup$
    Well, that and stainless steel :)
    $endgroup$
    – CrossRoads
    Sep 12 at 18:52










  • $begingroup$
    Yes, @CrossRoads, but the look is awesome!
    $endgroup$
    – PerlDuck
    Sep 12 at 18:57










  • $begingroup$
    The green layer is just a temporary protection that gets stripped before the aircraft is painted.
    $endgroup$
    – fooot
    Sep 16 at 15:20












  • 5




    $begingroup$
    Stripped planes are taken down to bare aluminim. The AL is then washed, acid etched (something like a mild vinegar), alodyne applied, then primer (the green color), then paint. The stripper doesn't know to stop at the primer level. This was mine after the alodyne stage, before primer crossroadsfencing.com/airplane/painting%20pics/IMG_0311.JPG
    $endgroup$
    – CrossRoads
    Sep 12 at 11:59











  • $begingroup$
    @CrossRoads Reminds me of a DeLorean :-) but I'm afraid it lacks the Flux Capacitor.
    $endgroup$
    – PerlDuck
    Sep 12 at 17:46










  • $begingroup$
    Well, that and stainless steel :)
    $endgroup$
    – CrossRoads
    Sep 12 at 18:52










  • $begingroup$
    Yes, @CrossRoads, but the look is awesome!
    $endgroup$
    – PerlDuck
    Sep 12 at 18:57










  • $begingroup$
    The green layer is just a temporary protection that gets stripped before the aircraft is painted.
    $endgroup$
    – fooot
    Sep 16 at 15:20







5




5




$begingroup$
Stripped planes are taken down to bare aluminim. The AL is then washed, acid etched (something like a mild vinegar), alodyne applied, then primer (the green color), then paint. The stripper doesn't know to stop at the primer level. This was mine after the alodyne stage, before primer crossroadsfencing.com/airplane/painting%20pics/IMG_0311.JPG
$endgroup$
– CrossRoads
Sep 12 at 11:59





$begingroup$
Stripped planes are taken down to bare aluminim. The AL is then washed, acid etched (something like a mild vinegar), alodyne applied, then primer (the green color), then paint. The stripper doesn't know to stop at the primer level. This was mine after the alodyne stage, before primer crossroadsfencing.com/airplane/painting%20pics/IMG_0311.JPG
$endgroup$
– CrossRoads
Sep 12 at 11:59













$begingroup$
@CrossRoads Reminds me of a DeLorean :-) but I'm afraid it lacks the Flux Capacitor.
$endgroup$
– PerlDuck
Sep 12 at 17:46




$begingroup$
@CrossRoads Reminds me of a DeLorean :-) but I'm afraid it lacks the Flux Capacitor.
$endgroup$
– PerlDuck
Sep 12 at 17:46












$begingroup$
Well, that and stainless steel :)
$endgroup$
– CrossRoads
Sep 12 at 18:52




$begingroup$
Well, that and stainless steel :)
$endgroup$
– CrossRoads
Sep 12 at 18:52












$begingroup$
Yes, @CrossRoads, but the look is awesome!
$endgroup$
– PerlDuck
Sep 12 at 18:57




$begingroup$
Yes, @CrossRoads, but the look is awesome!
$endgroup$
– PerlDuck
Sep 12 at 18:57












$begingroup$
The green layer is just a temporary protection that gets stripped before the aircraft is painted.
$endgroup$
– fooot
Sep 16 at 15:20




$begingroup$
The green layer is just a temporary protection that gets stripped before the aircraft is painted.
$endgroup$
– fooot
Sep 16 at 15:20











8

















$begingroup$

There are other methods in addition to the chemical and mechanical ones already mentioned in other answers. In some cases, paint is removed from aircraft using a laser.



Here's a video I found from the US Air Force that demonstrates the process:









share|improve this answer










$endgroup$










  • 1




    $begingroup$
    F16, 25 hours for 2 robots. C130, 75 hours for 4 robots. Bet a Cessna would be pricey, if one could get time at an AF base to have it done.
    $endgroup$
    – CrossRoads
    Sep 12 at 16:14















8

















$begingroup$

There are other methods in addition to the chemical and mechanical ones already mentioned in other answers. In some cases, paint is removed from aircraft using a laser.



Here's a video I found from the US Air Force that demonstrates the process:









share|improve this answer










$endgroup$










  • 1




    $begingroup$
    F16, 25 hours for 2 robots. C130, 75 hours for 4 robots. Bet a Cessna would be pricey, if one could get time at an AF base to have it done.
    $endgroup$
    – CrossRoads
    Sep 12 at 16:14













8















8











8







$begingroup$

There are other methods in addition to the chemical and mechanical ones already mentioned in other answers. In some cases, paint is removed from aircraft using a laser.



Here's a video I found from the US Air Force that demonstrates the process:









share|improve this answer










$endgroup$



There are other methods in addition to the chemical and mechanical ones already mentioned in other answers. In some cases, paint is removed from aircraft using a laser.



Here's a video I found from the US Air Force that demonstrates the process:


















share|improve this answer













share|improve this answer




share|improve this answer










answered Sep 12 at 15:12









RobinRobin

811 bronze badge




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  • 1




    $begingroup$
    F16, 25 hours for 2 robots. C130, 75 hours for 4 robots. Bet a Cessna would be pricey, if one could get time at an AF base to have it done.
    $endgroup$
    – CrossRoads
    Sep 12 at 16:14












  • 1




    $begingroup$
    F16, 25 hours for 2 robots. C130, 75 hours for 4 robots. Bet a Cessna would be pricey, if one could get time at an AF base to have it done.
    $endgroup$
    – CrossRoads
    Sep 12 at 16:14







1




1




$begingroup$
F16, 25 hours for 2 robots. C130, 75 hours for 4 robots. Bet a Cessna would be pricey, if one could get time at an AF base to have it done.
$endgroup$
– CrossRoads
Sep 12 at 16:14




$begingroup$
F16, 25 hours for 2 robots. C130, 75 hours for 4 robots. Bet a Cessna would be pricey, if one could get time at an AF base to have it done.
$endgroup$
– CrossRoads
Sep 12 at 16:14


















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