Parametric Reloading Die Lockrings/Locknuts

I got profoundly sick and tired of the awful O-ring style LEE locknuts that keep migrating. I couldn't be bothered to cough up the money for a bunch of locking ones, so I decided that I might as well learn to use the 3D printer that I have.

These locknuts come in three basic forms: Plain (non-locking), Single-screw, and Double-screw. The thread size, nut height, and other feature sizes are adjustable as desired. I'm including various example SCAD files preconfigured for 7/8-14, 1-1/4-12, and 3/4-16, as well as some pre-rendered STLs (see below).

The 2-hole version should offer better strength, more suited to the weaker material. I prefer this pattern generally, though you may find that the extra width makes the dies harder to fit in certain boxes.

The thicker variants like the 2-hole pattern may be most beneficial on a resizing die, or anywhere that extraction (downward) force is significant. On seating/crimping/expanding dies, the nut is never really loaded, so the standar