sharpening round pointed punches

Grant Erwin · 2005-05-10T00:22:49+00:00

I do a fair amount of center punching. I usually start with a prickpunch and then follow that up with an automatic center punch and thenmaybe a hand punch driven by a 2# hammer if I need a pronounced mark.My 2 automatic center punches are both exceedingly dull. One is made byStarrett, the other General. Both punch tips are replaceable, and yes, Iknow how to do that. They use identical threads, maybe 10-32 (haven'tmeasured them) so I could make up a pin with a threaded hole so I couldmount the tips in a collet.Short of a toolpost grinder, is there a good way to repoint the old tips?The ideal way to do it would be to set up the tips in a motorized toolheadon a tool & cutter grinder with a cup stone, but even when I had a T&Cgrinder I didn't have a motorized toolhead.GWE

May 10, 2005 22 Replies

Rate this thread:

Robin S. 21 years ago

Whoa! Personal responsibility?

Refreshing...

Regards,

Robin

Vote

lionslair at consolidated dot 21 years ago

Some simple glue would hold long enough for a safe saw cut. If it had been hun up in the blade then shattering light metal and worse is easy.

Sometimes experts in one field tend to be less cautious in another due to lack of work in it or respect.

Remember the saying - do as I say, not as I do.... I think the pattern maker was doing.

Martin

Vote

Tom Miller 21 years ago

Well said!

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required