https://www.xometry.com/resources/3d-printing/smooth-3d-prints/
- Using Paint and Sanding Material for PLA filaments
- Using Abrasive Smoothing Methods
- Using XTC-3D epoxy resin
- Using 3D Gloop
- Using PolyMaker PolySmooth PVB Filament
- Using Chemical Smoothing like Resin, Ethyl Acetate, Acetone for ABS filaments or Isopropyl Alcohol for PVB filaments
- Using Heat Gun
- Using hardware like Polymaker Polysher
- Automotive Spray Putty for PLA
- Using bees wax
- Changing inner/outer order
Note: Some methods apply to only a few types of 3D print technologies