(04-05-2017, 04:01 AM)WoodWheel92 Wrote: Would be a bit curious as to how to get the paint to not rub off, for the purpose of creating/possibly selling customized engines in the future.
As far as the wheels and couplings are concerned I don't think its possible unless you pile on some clear coat but that will wear through to the paint eventually and then the paint comes off. It is all about the prep, which this seller hasn't done since he explains how he did it. If you don't clean the plastic parts thoroughly with something that will remove the manufacturing release agents in plastics and not leave a residue any painting is hopeless for wear. Scuffing the entire surface is needed too and even with that a quality primer for plastic must be used because the paint by itself does not bond well directly to the plastic. But in conclusion even with all the proper prep, the lifespan of the paint losing its bond on plastic is limited especially around anything that rubs or is mishandled.