These are small, easy to print, stackable paint cups which I use for mixing paint and inks before adding to an airbrush.

I was using another version of these but due to the angles involved they weren't printing well and failing, so I designed my own version with less of an overhang.

Added a print profile with ironing on the inside which really helps give a smooth surface and stop paint from running into the layer lines (especially thinner paints).