No matter how good a 3D printer gets, you’re always going to have visible print layers ... The technique relies on the fact that ABS plastic and acetone don’t get along together very well.

Sanding, usually along with using fillers like Bondo Smoothing with solvents (e.g. acetone vapor bath for ABS) XTC-3D (a gap ... If you take some resin to use for 3D print smoothing, do not ...