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!
17 years ago