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Auto-Z Probing Setup!
Colt Router & Mach3

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* Grounding Spindle of Colt Router

The spindle shaft of the Boush Colt Router is not grounded (meaning there is no continuity between the shaft and router). For Z-Probing to work  as it should :), you will need to ground the shaft first. This is easily done.

​Thank you to Mogal on CNCZone for this idea! Thank you to Gerry for Mach 2010 screen set and his videos on how to accomplish this!
  • Holder is for Brush Size: 5x5x10mm 
  • Download my 3D File HERE
  • Drill bit 9.49mm (25/64  bit)
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I used a different brush for my initial setup, (05 RC  car motor) and a pen spring. However, this holder is for 5x5x10 mm brush with or without spring found on Amazon or Ebay.
Wire runs through the top of the housing.
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Drill a 9.49mm (25/64) hole in the center of the housing. You will also need to drill this in the cap.
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Mount the holder with the brush and spring inside.
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When the tool and the metal plate touch, PROBE ACTIVE must light up... this ensures things are working right.
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For my setup I have PROBE Enabled and set to Port #1 Pin 15 with Active Low
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