19 years ago
tube. Small drills do fine but when I reach the larger sizes I have
problems. I drill a small hole as a guide and then follow it up with a
larger bit. The larger bit does fine going through the first side of the
brass but when it reaches the second hole it just catches and freezes. It
will grab and really pull the pipe out of shape or if I hold the pipe
tightly the drill just stops.
I could drill one side and then turn it over but I am worried because I have
to run a pipe through the holes and they really have to line up.
Any suggestions on how to get a straight smooth hole though thin brass pipe?
(I am using twist drills made for meta in a cheap drill press)