(I know the letters are cramped in the second image, it’s because I was figuring out my usable table area…I’m more concerned w/ the "O"s)
It was my first cut - used a 60* v bit into foam. I used Fusion 360 to generate the gcode (attached) - basically just made a block in Design mode then switched over into Manufacture mode, went through setup and engraved, then output w/ the Fusion 360 post processor I got from here: https://github.com/guffy1234/mpcnc_posts_processor
This looks like backlash (or similar). There are a few things that can cause this but the most common is when the belt pulley is loose on the motor shaft. Check that, and if its not it, we can look at other tests.
