Originally Posted by
BTinNYC
I learned it from my gunsmith dad, who I think learned it from a English 'smith and I'm sure it means what you think it means.
Why I (don't mess with/attempt to alter/F with) screws
Right.... got it!
Also, slotted screws are evil by nature.
As stated above, I too go hex at first availability.
(torx if absolutely. but... eeeeh)
Would have also suggested an 'easy-out' (reverse twist bits with extra steps) which causes even more problems 25% of the time.
Next step is a shaped charge and/or some thermite.