February 4, 2022 Update: This week I stocked up on 3D printer filament and eventually succeeded in cleaning out a clogged extruder nozzle, so now I'm back to work on the BR-15 project.  I also finished a draft of another one of my "Expeditionary Journals," this one about my trek to North Fork Lake at the headwaters of the Big Lost River.  That makes the third draft I've completed, and I think I'll try to finish about two more before I try to push the lot of them through final editing and publication.  Anyway this weekend I think I'll upload a quick video I made about modifying a pepper shaker (in addition to the announcement I posted already about releasing the sabot stl file).