>>5817345>Soak it in Simple Green. It might take a week or so, but it will remove all the spray paint without touching the ABS.>Thanks for the tip, bros! :) I bought some today. The label says it's ok to use on plastic. I hope it doesn't eat eat away at the pieces. I'm using common colored bricks to test just in case. Here goes... Anon from the last thread here: other people in the LegoGen have heard my tale, but I'll tell it again for you. Back in the '80s, little-kid me thought it would be a good idea to convert my Classic Space crater baseplates into "snow" by covering them in a thick layer of white spray paint. They stayed white for almost thirty years, but last year I finally got around to cleaning them up. I just kept them submerged in Simple Green (I got a spray bottle and a gallon jug and just kept spritzing them a few times each day to keep them damp). Daily rinsing and scrubbing with a fingernail brush and helped speed it along, but after I was done, there was only a fine ring of paint around the bases of the studs that's only visible in macro photography.
ABS plastic (the stuff Legos are made out of) is nonreactive, which means that Simple Green will eat away whatever's on the surface of the ABS, but won't hurt the ABS at all.