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Rex B
 
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Default Optical center punch

You know, I almost bought one off ebay last week, but declined to bid
because I wasn't sure it wouldn't just wind up as another unused tool,
and I have lots of those.
I'll take another look, thanks

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Rex Burkheimer
Fort Worth TX

Tom Gardner wrote:
How did I ever live without this? In my little world, I have had to mark
and drill holes for bolts, threads and pins and have gotten lucky and not so
lucky. The mark of a good machinist is how well he RECOVERS from little
inaccuracies. My designs have always included fudge-factors for eyeballed
holes, as setting-up edgefinders and using the BP for drilling every hole is
just too time consuming and relies on accurate edges, good math and
back-lash problems. My thanks to the person that came up with the optical
center punch, it sure fills a spectrum of jobs. I think this should be one
of the first tools in a machinist's box!