I have heard many times at RCU that clear fingernail polish can be used to hold graphics on, that it is fuelproof.
I have what perhaps may be a stupid question but heregoes anyways:
Acetone removes polish, but isn't fuel residue and oil stronger than acetone, so why won't they remove the polish?

I don't understand what you mean by 'fuel oil and residue being stronger than acetone'. They're all very different chemicals. Clear nail polish works.

This logic works under the false assumption that the exhaust is stronger than acetone. The clear nail polish does work well. As I always say, the only stupid question is one that isn't asked.

I hope nobody thinks I assumed the question was stupid! I didn't.

Nope, not stupid at all.
Acetone: very strong stuff!! Nitro: strong stuff!! Alcohol: kinda strong!
Oil: nope but given time it will do it's thing to trim and glue.
Engine snot: just spent oil mostly but if you don't clean up after flying it will lift trim and covering plus soak into untreated wood.
Fingernail polish works pretty well.
OH, and never hold A lit match in an inclosed space around fuel!!!!! It can be harmful to your eye brows and other body parts!!!
Don't ask!! [&o]