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I finally ditched the edge finder for a coaxial indicator on vise setups
For about 3 years I used a wiggler and eyeballed the edge on every single vise setup, and my scrap rate on first parts was honestly embarrassing. Last Monday I grabbed a coaxial indicator from the tool crib and picked up the back jaw of a Kurt vise in maybe 20 seconds, dead nuts. The dial barely moves once you get close, so you just watch the needle and you're done. I ran 14 parts that afternoon and didn't scrap a single one, which never happens. Anyone else out there still fighting a wiggler or did you all switch over already?
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murray.spencer20d ago
So you grabbed the coax and did 14 parts without scrapping a single one, and that made you wonder why you waited three years. Fair question, but here is mine. Did you actually check the back jaw for runout before you trusted it, or did you just assume a Kurt vise is always square and call it good? Because I have seen jaws get dinged up from chips getting smashed in there, and a coax will happily sweep a bent jaw in 20 seconds and make it look perfect. The needle being steady does not mean the jaw is straight, it just means you are spinning around whatever surface is there. So next time you set up, try sweeping the jaw itself along its length, not just picking up the face, and see if it is really dead nuts or just dead nuts at one point.
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