>>6334925You can use the thinner to clean up, but that would be pretty expensive.
What I use instead is Klean strip green lacquer thinner. It's mostly acetone I believe, and smells strongly like acetone, so you might be able to just use that instead. They sell it at home depot.
I'm using a Harder and Steenbeck Infinity CR+ which is resistant to corrosion from lacquers and whatnot, so you still might want to be careful with this depending on what airbrush you're using. My old Badger RK-1 Khrome airbrush started to wear down quite a lot in the inside, but still functioned perfectly fine, so it's probably not that large of a concern. I think it was ammonia (from windex, which I use to clean up Tamiya paints) eating away at it though, not the lacquer thinner.
Like I said earlier though, Mr. Surfacer sands down perfectly, I use 600 to 2000 grit sandpapers with to wet sand it for a very smooth surface.