I had heard that natrium-hydroxide is supposed to have the same effect on PLA as Acetone has on ABS. So I went out to my DIY store and bought some natrium-hydroxide based drain cleaner. I tested two different PLA in a 50% solution and while one filament fell completely apart and lost all its structural integrity upon touch the other one wasn´t affected at all.
The next solvent I will test will be Tetra-hydro-furan.
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