First project! A Maya Calendar

[Jonathan]

I noticed that after the circle profile cut it was uneven in a couple of places. It seems to be on the Y axis and from what I have read I think it may be backlash in that axis, does that sound right? one side of the circle it was very obvious, a slight jut out from the circle, the opposite side not so much

Backlash can cause the effect you describe. It could be something else, like a slightly loose pulley/coupling, but that seems less likely since the rest of the part isn't all over the place. If you're machine is driven by ballscrews then you're unlikely to notice their backlash on wood, since it's very small (<0.05mm). That's not the case if you've used ACME or threaded rod...

[cncJim]

Backlash can cause the effect you describe. It could be something else, like a slightly loose pulley/coupling, but that seems less likely since the rest of the part isn't all over the place. If you're machine is driven by ballscrews then you're unlikely to notice their backlash on wood, since it's very small (<0.05mm). That's not the case if you've used ACME or threaded rod...

That's a worry then as I do have ballscrews! Just got a dial gauge so i will check later and report back :)

Jim