How to re-zero the Z axis with next bit once most of the material is milled away.

1

Would anyone know how to re-zero the Z axis with the next bit when there isn’t any original material left from the origin Z axis zero?

Thanks.

2

Always zero to the spoilboard. Your cuts should all be in the positive. This will save wear on your spoilboard and allow you to have a reliable Z axis reference.

The trick is in your CAM package, set the origin for the model at the bottom when calculating your tool paths.

I use Fusion 360, not the other packages so its a matter of clicking the bottom point on the stock.

Of course you can also make a known touch off point somewhere else on the machine and use that but that can be difficult getting calibrated correctly.

3

Thank you for the info.

4

Solid advice. There are other options, but require some pre-planning. You can find a litany of discussions and videos covering this topic, but the tier 1 solution is ‘zero to base of work’.

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