I'm seeing these "witness lines" or artifacts from when I cut a profile with tabs. In this picture, they are more visible due to burning but that is not always the case. My instinct is to attribute it to Z-axis tramming, but I can't get my head around that. If biased, the up/down during tabs should still follow the same lines as the regular cut.
Any ideas? These are with both 1/4" and 3/8" compression bits.
Thanks.
Attachment 381784