I’ve done the majority of the ones mentioned, plus:

  • Cracked lenses cause I think I can balance them upright on reflector while unscrewing bezel
  • Metal shavings in thumb/hands from filing/sanding. You know, the kind too small to remove but annoying enough to cause bumps.
  • E-switch wires are the devil sometimes
  • Losing sleep trying to finish a mod at 1 or 2AM and going to bed defeated because one of the above 100 things happened
  • Stripping retaining ring threads beyond repair
  • Ruin a $15 tool trying to open an $8 light