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  #11  
Old 03-20-2018, 08:44 PM
hefty hefty is offline
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I went ahead and ordered the pressure switch from Camasters. Michael gave me instructions on wiring it (old touch plate has 1 wire, new switch has 2). I will try to install this weekend and post back. Price was $445.
I laid the switch and a postage scale flat on a table and pushed the switch on the scale. Switch contacts made at exactly 1.5 pounds. It appears to be very well made.
John
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John Stanley Stinger II 3'x4', FTC, Laser, 1.7 Kw HSD w/ AB 523 SVC drive, V Carve Pro 8, WinCNC
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  #12  
Old 03-21-2018, 09:36 AM
CosmosK CosmosK is offline
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Metrol makes some super fine measuring switches. There are knock offs in the 3-400 range. These are used widely on metal cutting VMCs. Not sure how easy they would be to wire into a Stinger.

I get sub thou repeatability on my rebuilt conductive FTC in testing, but in reality, it can still move around a couple thou, not sure, could be debris or maybe stepper counts. I recheck manually when the cut is critical.

I'd calibrate .010" above spoil to start, but looks like lots of good advice here. Good luck.
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