On Dec 16, 4:19*pm, Chris Wilson wrote:
I need to make a fair number of 6 mm OD stainless steel pins to take 1 mm
OD R clips. I want to drill the rods near one end with a 1.5 mm hole for
the R clips. I have a Bridgeport universal mill and a decent drill press. I
have pin drill chucks to taske small drill bits. What's the best way to
drill say 50 of these pins with good efficiency and little chance of
breaking drill bits in them please? Best bits to use? Thanks.

Carpenter Tech has a web site with a book on Machining Stainless
Steel. That is probably not the exact title.
Anyway they have a whole chapter on drilling stainless steel. Worth
reading. And worth reading before you get the stainless rods so you
can see what the relative problems are between grades of stainless.

Stainless likes more clearance than regular steel and it work
hardens. So never take real light cuts.


Dan