In a perfect world - yes. But you can get great results if your table is flat to the x/y axiss. Holding it down is also a problem I use a vacuum table. Others have had good luck with double sided carpet tape. If your using double sided circuit board - it gets tricky registering for line up of both sides. I use pins that line up 2 edges of the board. - when I flip the board I use the same two edges for alignment.
As for the touchoff.. I use a microswitch I found. It is has repeatablillty of around .0007" which is fine for me. I don't know how you would hook it into mach as I use emc2.
http://www.electronicsam.com/images/...ostart/top.JPG http://www.electronicsam.com/images/...t/mounting.JPG
sam
Originally Posted by pastera  The thickness of the base material in OCB is not well controlled and can vary almost the thickness of the copper.
The tool depth should be spring loaded and set by a foot that rides on the material close to the cutting tool (ideally surroundind it). This is how my PCB mill (T-Tech) works.
Aaron |