Messed up tumblers? My jig for super fast sanding to re-coat for laser engraving. @atrsolutionsco

Sanding Tumblers the fast way. Prepping for paint or powder coat then laser engraving.
Plumer’s plug, threaded extension coupling, and some all-thread or a bolt.
I cut the bolt and used just the threads to thread into the coupling. I welded but the next one I make I’ll just use permanent thread locker .