Blackhawk to Safariland QLS

prusaprinters

I had a Blackhawk Omnivore holster (that I'm assuming uses a standard Blackhawk mounting pattern, so this should work for other Blackhawk holsters as well) and I wanted to mount it to my Safariland belt rig. Made this adapter in Fusion 360. Both the QLS and holster share the bottom hole, and then each use their own top 2 hole pattern. I countersunk holes for the screws that go from the adapter to the holster, and the tee nuts that attach the Safariland QLS to the adapter. I did these the same way you do brass inserts on 3d prints. Soldering gun heats up the metal stud until it's hot enough to sink into the plastic. I printed mine 100% infill in PLA and it is extremely solid. I don't foresee any issues with this. But I plan to use this just for training and I've not tested it to “duty use” standards. If you're going to use it for that, I might print it in something more rigid like ABS / ASA. Print model, I used 100% infill and tree supports with 1 support interface layer to hold up the bottom countersink holes. This is probably necessary because of the hole in the middle of the countersink.After printing, heat and sink the screw studs that came with your Safariland QLS into the adapter after printing (this side won't be available after mounting the holster in step 3, so needs to be done now).Mount the top 2 (countersunk) screws from your Safariland QLS kit through the adapter to the Blackhawk holster. The screws I used are #8-32, .35" long, and the head diameter is 0.5".Use 2 more #8-32 screws (this time 0.5" long with 0.5" diameter head) to mount the QLS Fork to the Adapter.Finally pass the 3rd (bottom screw) all the way through the adapter and into the Blackhawk holster, directly attaching the QLS fork to the holster. This requires a #8-32 x 9/16" or ¾" long. I went with ¾" for more contact with the holster body.I'm waiting for my screw from McMaster Carr to arrive, so I currently have it mounted with only the top 2 screws and I think this would be fine, but I still want the added assurance of the 3rd screw so I'll install that when it arrives.I'm new to 3d Printing and Fusion 360, so I'm sure my build was very inefficient and I could have made things a lot simpler. If you have any suggestions please let me know and I'll be happy to make modifications/alternative versions. I'm already considering a 2nd version where the Blackhawk and Safariland don't share the bottom hole. It will need to be a little larger, and I'm not sure there's any benefit, but someone may want that.