Belt loop safer (pants attachment point) 6mm

*NOTE:
This version minimizes wear on the belt loops, however unlike my other design doesn't eliminate it. Weight is still transferred to one loop, instead with the belt the belt itself, and basically all of the loops. This version is mostly handy for e.g. a carabiner to secure your keys so you don't loose them. Or lighter power tools etc. It's still better then raw-dogging it, however just keep this in mind.

**NOTE:
Recommended to be printer with supports at 0.12mm layer height, print it slow, trust me. Can work at 0.28 layer height however you will loose some definition in the print witch makes it look sleek. A finer layer height also smooth-ens the print, causing less wear overall on the loop.

2 variations of a belt look safer. The opening for the attachment is 6mm.
My first design https://www.printables.com/model/1144769-belt-loop-safer-for-keys-on-a-carabiner revolves around a belt. It works, however i found that when removing the belt when doing laundry, it became a bit tedious to remove attachment point. 

I enlarged the hole to accommodate different thickness of belts so it slides off easily, but if you forget to put it on before looping the entire belt, it becomes a hassle to redo it. As i tend to forget about it.
 

Henceforth the redesign that attaches to the belt loop itself, and can stay on when you do the laundry (if you use stainless steel hardware, and brass for the heat set insert). It uses 2 standard M3 hex-head screws and 2 M3 nuts or M3 heat set inserts (5mm length ones). 

Be sure you properly heat up the Insert before attempting to plunge it into the part as you want the heat to be quickly injected but also dissipated fat so the surrounding doesn't distort too much. I recommend heating the insert for a full 20 seconds, plunging it in then cooling the entire part in a glass of cold water.

I printed mine out of Carbon fiber reinforced PETG, with the heat set inserts  at 100% infill (i wouldn't go below 100%). It held up about 35KG (depending on your materials and settings it might differ). I assume that with the captive nut you can hold a bit more maybe less as there is support missing to accommodate it.

Print the base attachment (upside down) so that the full flat area on top hits your build plate.
Print the lower part on its back (with the non text side on the bed).

Supports are recommended, however they can be tedious to remove so i don't use them. If you do so, you would need small needle nose pliers to remove the support on the inside if you print out the captive nut version.