Smooth Out 3D Printed Models With An Acetone Vapour Bath

3D printers build models in layers, which you can see if you look at a model closely. If you want a smoother, shinier surface, you can achieve injection mould-like quality with a little acetone.

Acetone is a powerful solvent that can actually break down acrylonitrile butadiene styrene (ABS), which is a plastic commonly used in 3D printing. And as Matthew Perks demonstrates in this video from his YouTube channel, you can use the vapors acetone gives off to smooth a model’s hard edges. To do it, you’ll need a tray, a tall glass, some acetone and a small metal platform for your model to sit on. You’ll also need a small piece of cardboard and a paper towel.

Set the model and platform on your tray, then fold a paper towel into a loop and put it at the bottom of the glass. Wedge it in place with the cardboard piece, and pour a little acetone in the glass so the paper towel can absorb it. Now place the glass over the model and fill the bottom of the tray with a little water so the acetone vapours don’t seep out. After some time passes and your model starts to look shiny, just remove the glass and let the model dry.

Simple way to make ultra-smooth 3D prints at home [YouTube]