I do a lot of 3D printing, and have not been too thrilled with a lot of the adhesives I've tried for PLA filament.However, this Gorilla epoxy works beautifully! It bonds very well and cures quickly! It mixes well and is very forgiving - out of dozens of applications, I've only had one instance of it not curing properly when I failed to measure out an equal ratio of resin and hardener.You have to work quickly, as it becomes too tacky to apply properly within 5 minutes. So it's best to carefully plan thing out, practice assembly and do limited applications at a time. It will be full load-bearing strength within 24 hours. For my projects (which are light plastic) I can usually set bonded pieces down carefully within 15 minutes of holding them together, and can safely handle them within an hour or two. This really helps me work fast!