I was trying to cut a mortise the other day with the Shopbot and I was shooting for a length of 1.25 and a width of .625 and the numbers I got after the test cut were 1.225 and .600. This isn't the first time I have had trouble getting exact sizes on parts and often I end up just compensating for the difference in the program, but it does puzzle me. I've checked the bits and do not see any size problems, I suppose runout could be a factor, but is there anything I am missing here? Is there some setting that I have overlooked that could make things work the way I think they should? I would like to do some inlay work in the future; however, the problems I'm having with this issue make that pretty much a pipe dream right now. If it makes a difference I have been drawing parts in AutoCAD and than bringing them into PartWizard in a DXF format. Any help would be greatly appreciated.
Alex Johnson