Web Goblin cnc has begun

[JAZZCNC]

Nice indeed. I thought at one point of using a piece of PCB as the contact as then if something goes wrong the PCB is weak (as long as it's not FR4) and will break instead of the cutter.

Jonathan PCB works great thats what I use for quick top surface setting, very easy very quick and super accurate. . . . Doesn't even leave a mark on the cooper. You won't belive how sensitive it is.

Brilliant when combined with edge,corner and centre probing routines save hours of setting up time. Just the top of surface alone is worth the effort. . . All 5 mins it takes to make. . .:tup:

[Jonathan]

Doesn't even leave a mark on the cooper. You won't belive how sensitive it is.

That's mildly surprising. Maybe the electrons tunnel across the gap :heehee:
If I put an op-amp in between it could be incredibly sensitive, though that may not be a good thing. Combine it with averaging of the readings ... assuming the difference is actually greater than the resolution.