How do I clean my casts?
A lot of guys use an acetone bath for their 3D printed parts. I suppose I could too, although I have never tried it. I notice the acetone lightly melts the plastic. Sometimes distorting detail.
I use a mild liquid hand soap, some steel wool or green dish scrubbie and cool water. The scrubbie will lightly dull the surface but blend everything consistently at the same time softening sharp edges from the flashing.
For urethane figures it makes them kinda cloudy. But once the clear coat is applied it will be glass clear.
For all my basic sanding needs, I use my pocket knife and precision or ''Swiss'' files.