Originally Posted by
Loveofthegrainworkshop
I have a china zone cnc 6090. I am using easel free to design and usb cnc controller to run the machine. I designed a board with multiple pocket shapes to cut 1/2” into the board. Shown is the tool path which looks fine. It starts with the square which cuts perfectly. Once it switches over to cut the circle it starts going haywire. It moves very erratically moving along one of the axis cutting a curly q like pattern. It’s like it cannot control both axis at the same time. I tried a different file with the same shapes in a different pattern. It cut the square and diamond fine. But once it went to the star. It did the same thing. I tried a pattern cutting out circles instead of pocket circles. It cut perfectly. What could the problem be. One thing I noticed is as it cuts the square its very smooth and precise and steady. When it goes to the curcle or star it appears to speed up the feed rate.