May 13, 2021 Update: This week I conducted an experiment to measure the shear strength of a couple different 3D printed materials, specifically eSun PLA+, MatterHackers PETG, and SunLu PETG.  Of the three, the SunLu PETG was both the strongest and the most consistent, although they were fairly close.  I filmed the experiment, of course, but I haven't gotten around to editing the video yet.  I've been waiting for a nice calm day to film a video about my bolt-action bullpup, but we've had a series of storm systems moving through, and so I haven't had a chance.  I can't complain, though, since the storm cells have brought some scattered rain that our county badly needs after a dry winter.  Anyway, this weekend I think I will upload the video I made about making leather holsters.