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this post was submitted on 25 May 2026
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You might get some minor surface reaction, but you're sure as hell not able to dissolve PLA in acetone. Leaving a part printed of PLA in acetone will not turn it in to goo like it does with ABS/ASA.
Why don't you try it before saying that?
I set this up a good 25min ago, let's see what happens. It's polymaker polyterra PLA, 3 walls, 15% gyroid infill and some fuzzy skin with default parameters from orca slicer.
So far all I have is very slight color leeching out, but nothing has dissolved so far. I'll let it run for a few days and keep you updated.
This is Prusament PLA dissolving in acetone in seconds:
I'll come back to it in 30 minutes and it'll be a messy soggy half-dissolved thing. And it'll be fully gone within the hour.
Interesting if that happens, but that seems to be caused by additives used by prusa in their filaments then, because from a chemical standpoint the crystalline structure of PLA is simply not dissolvable by acetone. It can cause swelling and delamination of layers, but not actually dissolve it (without additives that mess with the polymer chains)
Melty melty...
I'll drop Ultrafuse PLA PRO1 in the jar when this one is gone. It does the same thing
I'm not actually seeing it dissolving at all though. It's softening, sure, but it's not dissolving like ABS does.
Sorry I was busy at work and I left it there.
It's all gone. It just left a bunch of chunks behind - more than usual:
The acetone is black, and when it dries off, it leaves white plasticky powder on my hand.
Man, you really like to double down on wrong.