Hi,

I have just got my diy router build finished and have been trying it out with Mach3 and some toolpaths created by the demo version of Vectrics VCarvePro.
When cutting an oval shape, the movement seems jerky with a lot of accelerating and decelerating for each line of g-code. I haven't tried cutting anything yet so i'm not sure how smooth the cut will be but it seems that it will take a lot longer than it should because of all the decelerating.
Is this being caused by the Grex or Mach 3 or the GCode file? What can i do to improve it?

Cheers
matt