How to smooth the surface of parts printed with Co-polyester (PET) filament
Are there any techniques for getting a smooth finish for parts printed with co-polyester (PET) filaments? More specifically, I am looking for an alternative that does not roughen the look of the part - such as using sandpaper - but rather works like acetone baths for ABS.
- ColorFabb nGen and XT
- Taulman3D n-vent
- TripTech Athiri 1800
- 3DXTech 3DXNano
Ethyl acetate (sold as a MEK substitute) is supposed to work for vapor smoothing PET. It doesn't seem very toxic (it's used to decaffinate cofee and tea, and as a nail polish remover), but you might want to look more into it. There's a post on Printed Solid's blog where he vapor smoothed colorFabb XT and MadeSolid PET+ along with a few other filaments and got some good results.
The links in the blog don't work for me, but google was able to find slightly larger versions: