This could be less of a problem and more of a lack of knowledge on my part, but I am having troubles using the auto touchplate from Avid on my Pro 4896 (the square one with corners on one side). I am using Mach 4 - the one provided by Avid.

My issue is that I am having parts milled in different locations than expected. Here are two basic questions that will probably drive me to a solution.

1. Should the X and Y zero be on the edge of the bit or the center of the bit. Mine always seems to be the edge of the bit.
2. Should I have to re-zero the X and Y between tool changes? It seems like with the orientation in question #1 I would have to. Going from a 1/2" to a 1/8" bit leaves the bit quite far from the corner of the work piece.

I can get some pics if that helps...

Thanks in advance.

Shawn