We had a dry-ice unit at work and a friend had another one (Lockheed Surplus). They were both expensive to operate and maintenance intensive. The deal (obviously) would be to find one to rent or to find a shop you could hire to do the work. All of which sounds spendy.I recently used a friend's cheap HF soda blaster to removed baked and burnt on carbon and lead from an O-300 piston. Incredibly good results. Look up some videos of dry ice blasting, it would possibly be a very good alternative.
Grit in bearings, hinges, pulleys, ....could be a problem.....was a place near me at one time tried plastic bead blast and they did not last long because of the grit in bearings problems. That is why dry ice or soda blasting and strippers are the preferred methods.....For some reason scuff and paint works without the grit in bearings problem which I guess I do not understand that or maybe it is a problem and that is why it is not done so often.I'm curious if a Vapor Hone machine would work on aircraft aluminum.
I used to offer this service when I ran an FAA licensed repair station, the first thing was to make sure the surface had absolutely no holes in it. A 1/8" diameter rivet hole will dump a quarter of a cup of particles inside within 3 to 4 passes of the blasting nozzle. This is why the CO2 systems became much more popular. Remember the same thing happens with soda blasting, but at least you can wash it out with a hose.USAF T.O. 1-1-8 APPLICATION AND REMOVAL OF ORGANIC COATINGS, AEROSPACE AND NON-AEROSPACE EQUIPMENT
My favorite is AeroChem Plane Naked... for many reasons... except availability may be an issue.
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For light weight sheet metal, 'plastic media blast-stripping may work... but only in the hands of an aircraft stripping paint-shop experts [lots of possible damage issues to be aware of].
Yep. Just like blasting caps and dynamite. Both of which were available over the counter in my extreme youth. ;-)Soooooo...the GOOD stuff in paint stripper was... "Methylene chloride, also known as dichloromethane or DCM, a solvent used in a range of products. The average consumer is most likely to encounter it in paint strippers, even though safer alternatives exist. Methylene chloride has been linked to cancer, cognitive impairment, and asphyxiation. Numerous people have died from exposure to methylene chloride. In 2017, the U.S. Environmental Protection Agency (EPA) proposed to ban this chemical’s use in paint stripping. In 2019, EPA only finalized the ban on consumer uses and sales".
That blurb, from SaferChemicals.org, explains what happened. People are idiots and need the government to step in and protect them from themselves. So you and I can't buy it, but commercial users CAN. So, make friends with a commercial paint shop or "fhagedaboutit." I tried to buy some from a vendor but they wanted business license numbers and a commercial address to ship it. It can be neutralized with water, but people would splash that $h!t in their eyes and go blind.