Is an instant glue good enough for PLA?
Is an instant glue good enough for PLA?
I'm making a 3D printed figurine/trophy for my friend as a gift, and I need to glue together base and the figurine itself (it's a giant amongus). My question is: is something like an instant glue, or just regular glue good enough for PLA, or do I need to by some special one?
Generally any kind of superglue will be fine. Elmer's glue might even work if you're in a rush or don't have other materials. There will be a visible seam, and my experience with both is that it's quite easy to break the bond (especially with Elmer's glue).
What you really want is plastic cement or something that'll melt the plastic slightly, as that'll give a stronger bond. Plastruct is what I use, but there may be alternatives in your region. This will also leave a seam, but the strength is far stronger than regular glue.
Another way is to do what cosplayers do and use a soldering iron to melt the plastic together (do this in a well-ventilated area). This'll leave a seamless finish without any visible gaps, but only really works on larger models that you're also planning to coat/sand.