Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: jackson74 on March 15, 2016, 10:59:02 PM

Title: Z Zero Offset for Touch Plate
Post by: jackson74 on March 15, 2016, 10:59:02 PM

I am looking to adding a touch plate for Z Zero.  Perhaps just one that lights up when the bit touches the metal and then having say .125" away from actual Z zero height.  How do I offset that .125" so that Mach3 accounts for it and goes to actual surfae Zero?

Thanks for any help,

I have looked around but I am getting a bit lost.  If there is an easy answer, thread or video it would be appreciated.

Also, if any one could recommended a simple to use/make/purchase touchplate  one it would be great.  I am looking to keep away from wiring the BOB.

Title: Re: Z Zero Offset for Touch Plate
Post by: Davek0974 on March 16, 2016, 03:29:29 AM

The .125 would go in the Gauge Block Height DRO on the Offsets screen in Mach3, to make a manual LED touch plate all you need is a simple circuit of battery, LED, clip, and an insulated plate like some circuit PCB.

The clip would go to the tool, then the LED then battery then PCB - touch the tool to the pcb and the circuit is complete and LED will light up. It will not be as accurate as connecting to the BOB though, which is usually very simple if you have a spare input.