I ran my first job using VCarve Pro 3.1 on my relatively new PRT Alpha and had a few problems. The job seemed to run fine for the v-carved letters and texturing but when I tried to cut a large oval around the part (~ 12in x 18 in) the machine chattered and vibrated so much during the cutting I stopped the job. I was cutting MDF with a ½ in bit, ½ in plunge at 6 in/sec. I air cut the job and had the same problem so it’s not an issue with speeds or cutters.. I’ve cut similar circles and arcs in Part Wizard and from the command line and never had this problem. I was using the Shopbot (arcs)(inch)(alpha_control&#41 ; post processor in VCarve.

Any ideas?

Tom