"debonitate" -- I used to do that to all my pipes on a bi-weekly basis, till I figured out using a diaphoromonoaministad-impregnated 3/4" drill bit & it'd last for months.
You do have to be careful when you wallow the drill around inside the shank, though, or it'll put a new door where you may not want one. That, plus the brush-on Teflon coating make it a job best left to us experts, though. One of my customers tried it back in '84 & nobody's seen him since. Happy ending, though; his widow married their lawyer.