Hi, I have a desktop cnc that I have built myself and have started using. I have been trying different cam software and really like CamBam. But I am having trouble with the precision of CamBam. I cut a 1"x1" square through CamBam using 0.125" endmill and finished product is smaller by 0.020". When i run the same .dxf file through MeshCam and cut it with the same endmill i get a result within +-0.005. I have milled many different pieces for testing and CamBam is always smaller. Also I am using Sketchup for cad and mach3 for posting for both CamBam and MeshCam. Any help would be appreciated.

Note: I hope I have posted this in the right forum, if not I am sorry. Thank You.