Ace padlock cutaway: making of

Measurements cheat sheet: Plug retainer 0.470" from top, #36 drill, tap 6-32 Remove plug; tap hole before proceeding Shackle retainer 0.520" from top, 0.340" from edge Drill #43, tap 4-40 When planarizing, cut to 0.720" from lock bottom (not 0.790" like I did - refer to discussion at end of video!) First pinstack cut is 0.237" from edge. Spacing is 0.276".