Hi Kit

We are moving to the Hills outside Melbourne No Shed yet but room to build one. There is a big garage for now.

Thanks for the heads up on the IC chip, I would appreciate any feedback.
The levelling is needed to make sure the cutter head is truly vertical In X and Y. Before a cut is taken.
I thought for some time on this, It would probably work reasonably well without levelling, assuming the support rails were fairly straight. However reasonably is a word I would prefer not to use.

The way The machine will operate is to position the cutter head in X and Y before each peck.
Then using Joe's optical system position the Z at the wire before taking a peck down a known distance.

Regards
John