Hello Openbuilds! I am in need of some higher level brain-power as I have run out of some a long time ago... Machine Specifications: OpenBuilds extrusions (500mm x 500mm) V wheels for linear motion ACME lead screw for z axis (Basically, an ox/shapeoko/x-carve hybrid) CAD/CAM software: Fusion360 G-Code Sender (What I've tried so far): UGS BCNC GPANEL (My arduino runs 0.9J GRBL) I am trying to make a project box out of pine wood, but happen to be stuck with engraving - more specifically engraving the letter "O". Before I even go thru what I've tried, let me put up a picture to show what I am mumbling about. Engraved vs Contour Cut Letter "O": [/IMG] As you can see from the above picture, the engraved O's don't align at the arrow marks. However, if I cut out the same letter "O" with a contour cut, I can get perfect alignment. Now, I know what you're thinking - "OP, it's definitely mechanical!" BUT WAIT! If it is mechanical, wouldn't it show up in my contour cut letter "O"? And if I ran the program again, it will trace the same exact toolpath with no difference in result. I have also thought maybe squareness was an issue, but I have squared this to the point of calling it spongebobsquarepants. -_- Lastly, my circles come out great when it comes to boring/contouring/pocketing. It's just engraving that becomes an issue. Any help? If anyone needs to see a YT video of my pain, I am uploading one as you read! I will update this post with a link below. Link as Promised: *NC File is attached* Thanks for any helps!