Circle pocket not ending up a circle

@SwapmeetPete wrote:

Hey everyone,

I've got the Shapeoko 3 XL and whenever I attempt to pocket a small-ish hole (~1" diameter) using a large-ish endmill bit (0.25"), I get bad results (see image below). I have tried decreasing the plunge rate, feed rate, and depth/pass without improvement. The bit seems to just hover in place when it should be moving to create the proper profile. I am able to make larger curves with no problem. Is this just an issue of trying to do too small of a pocket with too large of a bit or are there other settings I should be tweaking to improve the functionality?

Thanks!

Caleb

IMG_3173.JPG1224x1632 992 KB

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