hi There,
phew thanks for the result of 400, it seems happy there and I did spend a day to get that result.
I am using a V carve engraving bit. I used .2 as the tool diameter.
I will have to check the gcode, The test I ran was generated by the 'cut circle wizard' that ships with mach 3, I would be supprised if the wizard was wrong more likley it could be my key presses or lack of an enter.
Phil - Will post tommorrow.
Thanks to you both,
Andy