A glue gun that dispenses molten PLA instead of hot glue turned out to be a handy tool for joining 3D-printed objects together, once I had figured out how to print my own “glue” sticks out of PLA.

Weld-On #16: Designed for PLA Adhesion As mentioned previously ... Such a long work time is very forgiving and would make this glue perfect for putting together fiddly little parts.