[Shop-talk] Drilling into a gas tank

[Randall]

Brad,

1/8" NPT is actually a fair-sized hole, closer to 3/8".  Should be plenty
unless there was gravel mixed with the mud. I think your plan is eminently
workable.

Drilling by hand, I doubt you'll reach ignition temperature for gasoline
anyway.  I've seen a cigarette put out in the stuff.  But a gallon or two of
water wouldn't hurt anything, JIC.  A little cutting oil will help keep the
bit and swarf cool, too.

-- Randall