I designed this jig around the Harbor Freight horizontal clamps, item 96238. I personally use the vice mounted version, which is designed to be glued and screwed together for strength. I used M5 hardware on this (leftover from some 3d printing upgrades/builds). Designed to be printed without any support. I split this model in half with some alignment tabs to help glue it together, works well for smaller volume printers. I also used some Crown #513G self adhesive faux leather in the pocket to keep the covers safer.
The author marked this model as their own original creation.