We’ve seen acetone used to smooth out 3D printed objects before – either by dunking the parts in an acetone bath or brushing the solvent on – but these processes had mixed results.

Some use acetone to smooth PLA ... These final refinements take a print from good to exceptional. Making your 3D prints look ...

Smoothing ABS prints with acetone vapors can look amazing but results ... If you take some resin to use for 3D print smoothing, do not return it to a printer’s reservoir or container.