AutoZero on metalwork

gSender ❓ Question
1

Hi

I just received my AutoZero (it’s lovely btw) and I’ve been thinking… can it be used on a metal cutting CNC, maybe I’ll need some adhesive plastic film on the bottom of the AutoZero, or plastic shims/standoffs of an exact thickness, thoughts?

Can I “offset” the AutoZero in gSender to compensate for shims?

Thanks!

2

You can check if you need to make changes to the AutoZero touch plate by continuity testing, using a multimeter or using GSender and touch plate.

First, test between the metal table and the tool. If there’s continuity you’ll have to modify the block.

Then test between the metal table and a ground in the controller(AutoZero touch plate magnet).
If there’s continuity, you’ll have to modify the block or reverse the wires going to the controller. In this case, if you reverse the wires, you could also probe directly off the metal workpiece with just the one wire attached to the tool since the piece would be grounded through the table.

You would have to write a macro to probe and set the new coordinates with/for the AutoZero plate.

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3

Thanks, yeah, I have electrical continuity between my spindle and my bed.

I’m going to buy a small sheet of 0.5mm PEEK and make some shims to go on the three bottom surfaces on the AutoZero.

What would the macro look like?

Thanks.

4

Why not just probe the metal stock directly?

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