Chipping problem with Shapeoko Pro

Hi all,

I’m encountering an issue while cutting red oak, this is the first time happening, any idea what is causing the chipping at the edges as per below photos?

Try a downcut endmill such as the #251?


You cutting cross grain and this is almost unavoidable on oak. You can mitigate with sharp tools, feeds and speeds, masking and coating the surface with shellac and/or polyurethane.

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