I'm cutting out 2" holes in AL sheet metal, the problem is the holes come out 2.125". I'm using a .125 bit, so I think the program is using the center of the bit for the cutting path. I'm very new at this, so any help would be nice. I was wondering if the is some type of setup in mach3 or lazycam that I missed, as I really don't want to change the hole size in the program to 1.875" to cut a 2" hole.

It will be a setting in LazyCAM I would think. Dont use and never have so afraid I cant help with it.
Hood

See reply in your other post on the same issue.

http://www.machsupport.com/forum/index.php/topic,26230.msg184759.html#msg184759

RICH