There’s a variety of ways to add threaded holes to 3D printed objects. You can tap a hole, but the plastic isn’t always strong enough. Nut traps work, but aren’t very attractive and can be ...

We like the threaded insert method where a brass ... We’ve seen custom inserts made with nuts that ought to work pretty well even though they don’t have the features to grab the plastic.

These fasteners have been designed to assemble unconventional materials, such as ultra high-strength steel and bioplastics.