Mechanical vs electrical edge finder

RJSakowski

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And don't beat yourself up on running one too fast and it coming apart. I did that to a Starrett at work once and was luck enough to be able to get it back together (it was a communal tool). A hard lesson on running at the correct speed, but one truly learned.
I did a Homer Simpson "Doh" and grabbed another edge finder.

This morning, I found the errant tip. The tensioning spring had been severely distorted by the event but I threaded a wire rod through it to keep it straight and reformed the spring. You can never return an extension spring to a close coil form so the spring was now too long for proper tension. Removing 1/8" from the spring solved that. I put the edge finder back together and tested it and it works as well as ever.
 

higgite

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Aug 15, 2013
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After it runs true, how much more movement is needed to make it kick out? Maybe it's my eyes, but after I judge that it's running true, it usually takes more movement than I expect to make it kick out. In other words, I think it's running true way before it actually is. I'll stick with the kick out method. ymmv

Tom

Tom
 

Illinoyance

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May 4, 2019
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498
For precise edge finding I have a magnetic "chair" that I set on the edge then indicate between the "legs". Somewhere I picked up a similar device made by Moore.
 
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