FAQ: Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable
Invalid G-Code: Error 33
1112 May be caused by stacked paths. Another possible cause (esp. if using AutoDesk Fusion 360) is inaccurate conversion from Imperial to metric — convert project to metric, then do CAM in metric, then send a metric G-code file to Grbl. Seems to be an accuracy or calculation problem.13