Cliff_Johns
Elite Member
I'm trying to drill out some stainless steel rivits. I'm going through
my pile of old drill bits acquired from various places and found some
that are marked HSO instead of HSS. The markings are quite clear.
So 2 questions:
First, what does HSO mean on a drill bit?
Second, To drill out the rivits, I figure use slow speed and a little
wd-40 -- this has to be hand drilled. Any other advice?
Cliff
my pile of old drill bits acquired from various places and found some
that are marked HSO instead of HSS. The markings are quite clear.
So 2 questions:
First, what does HSO mean on a drill bit?
Second, To drill out the rivits, I figure use slow speed and a little
wd-40 -- this has to be hand drilled. Any other advice?
Cliff