Solvents and glues for PLA


Thanks to everyone for the tips.

I found a youtube video in which a guy did a fairly well-designed empirical assay comparing various commercially available glues to one another on their ability to keep 3D-printed PLA parts together, which you can view here.

The take-home from the video is summarized in the following chart. Below that is the winner of his head-to-head comparisons, which turns out to be regular old Loctite Ultra Gel Control Super Glue. Haven’t tried it myself yet, but I will be buying some soon. If I have any contradictory experiences, I’ll let you all know.


Awesome resource. Thanks!


Best solvent/glue for PLA is actually Ethyl Acetate, but it works only on certain PLA types. I have found that the colored PLA (green and red) that I have are not influenced by Ethyl Acetate. For those I have successfully used paint stripper (STRIPPER KS-3) which works on every PLA I have tried it on. I much prefer a solvent to do the welding instead of glue. No glue cleanup afterwards. Solvents are also great for smoothing PLA.