Hello Group.

I am an amatuer metalworker and have a question about drilling holes through
thinwalled tubing (.035 to .049") so that the hole goes through
perpendicular to the longitudinal axis? I have a "V" block and a drill
press. I read that it isn't a good practice to drill all the way through a
tube and that it is better to drill one hole, rotate the tube 180 degreees
and drill the opposite hole with a final reaming to correct finished
diameter. My problem is how do I mark the tube and center punch it to get
the holes are directly opposite each other? Thanks in advance.

--
John "Ebby" Ebensperger
Hatz Classic s/n37
Camden, NY