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 difficult ...

If you want to make serious assemblies out of 3D printed parts, you’ll eventually need to deal with threading. The easiest way is to make a nut trap that you can either insert a standard nut into ...

The free-spinning locknut turns freely onto a bolt until seated against a base. Further tightening of the nut produces locking action. Operating principles of all these nuts are similar. When the ...