Owh wait your corners are all screwed up. 
Probe slower, or do two probes with the second being very slow.
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Try making a single letter 2.5 times the size of the ccurrentsize in scrap shallower. To me it looks like diameter to depth and corners are wrong.
Posabley the acceleration on retraction to high if that is still posable? Causing skipping
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Sorry I got sick and theres a lot of life going on so I havent had time/energy to troubleshoot this deeply. Ill be back as soon as things calm down a little.
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Sorry to hear this we will be ready to help when you are better.
Life is always here and so are we
Hello,
from my experience this kind of bulges is a “lack of stiffness” issue (and maybe some backlash added, too).
The tool is deflected by the cutting forces but once it hits a corner it stays there for a little while giving it time to work against those forces and cut deeper into the material.
Thighten everything up on the machine as good as possible, especially the drive belt.
And use shallower dept per pass settings to lower the forces.
Good, sharp tools also help.
Christian
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Life is starting to settle back out some… I think I figured out a large part of the issue.
My oak ply was bowed upwards and I thought I was able to flatten it out with some screws into the spoil board/drop supports and it looks like I missed the solid supports below the spoil board and the screws pulled out of the spoil board.
I also sprained my wrist so its gonna be a little bit before I can fix my spoil board/drop table, but I think i have a good direction to head down, im gonna fix that next and then work out any remaining issues.
This feels like it helps explain the depth of cut issues I was having too.
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Best of luck for a speedy recovery.
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