Brian Lawson wrote:
Hey all,

A friend has snapped a #71 drill bit in a brass fitiing. Anybody know
which acid will dissolve ferrous metals but not brass? Don't know if
it matters, but until the broken bit is removed, it's a "blind hole".

Thanks for any comments.

Brian Lawson,
Bothwell, Ontario


Alum dissolved in warm water. Apply and let it work. Apply as needed
till the pit is free/gone.

Won't hurt the brass and it's cheap (Alum is in the spice/pickling area)
Also works to dry canker sores.

--
Steve W.