It really depends on what paint you are using. Castrol Super Clean will take off most paints...some in a matter of hours, some in a couple days. Some people use 91% alcohol. Some use oven cleaner. I've only ever used Castrol Super Clean. Submerge the body in a SEALABLE container. CSC seems to lose its kick if exposed to air. WEAR GLOVES AND EYE PROTECTION!!!!!!!! This stuff will eat your skin. This is true of anything that will take paint off. When the paint starts to come off, scrub with an old toothbrush to get in all the nooks and crannies, wash the body very well and start over. The CSC can be reused...strain off the chunks of paint and put it back in the bottle. Once it gets to the point wear it doesn't have enough power to take off paint, just pour it down the drain. It's biodegradable and probably cleans the pipes out. Good luck!