some of you might be aware that smoothing PLA with Acetone is possible. I'm doing this for a while with a PLA filament from "ICE" in color "wondrous white".
First some sanding, then brushing a couple of layers with acetone. It looks like this:
This is a detail:
I belive this works because PLA is just a category for polylactides, not a precisely defined substance. Or the PLA filaments available on the market could be blends that include a portion of different materials like ABS.
However, not all PLA filaments respond do acetone equally. I just tried this with the original Ultimaker PLA in color "silver".
…and after applying one coat of acetone:
In this case, it's an unintentional, but somehow cool effect for this small model of the InMoov 3D printed robot. It makes him look nicely worn-out.
So, smoothing PLA with acetone is possible - but only in some cases.
Manufacturers, please disclose the composition of your filaments!
Now I am very cusrious how other PLA filament brands respond to acetone. Next time I will try "REC" and "German RepRap Premium Filament", both PLA and in color white. Maybe it will give me rainbow colors