I finally got my first files running, and I'm seeing really jerky motion on both the roadrunner file and an Artcam file. The straight sections of both seem fine, but any curves and the motion seems as if its cutting a segmented line instead of a smooth curve.
On the roadrunner file it seems less jerky. The Artcam file is considerably simpler- just a circle inside a rectangle. The rectangle cuts fine, but the circle is jerky. Both files seem to smooth out if I reduce cut speed, but its very jerky even at 100 ipm, which was very smooth with my SHopbot PR controller.
What should I check? I'm using the Post processor that Alan of Custom CNC provided, which is a Mach 3 post. THe post saves the file with a .cnc suffix instead of a .tap, if that makes any difference.
My machine is a P4 2ghz with 1mb, no network or internet connection. My controller is an Ascension 1000 connected to Shopbot Vextra motors. I get very smooth travel for all jogging, up thru speeds as high as 300 ipm.
Thanks for your help!
Wayne C