[Lab] how to change endmills and not loose Z zero?

[Darcy Whyte]

I want to eventually do cnc cutting with multiple endmills.

Problem is I wont know where zero is for the work in progress. It's easy to
estimate zero at the start and it works okay for cutting. But to continue
work, an estimate wont do. It has to match.

Any ideas?


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Darcy Whyte
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