Hi, First time on any forum so hope I’m doing this ok. Brief bit of background. I’m a furniture maker working on my own. Having watched the videos I decided that a CNC router would be a perfect 2nd set of hands for template making and the like, so I pulled the trigger on a workbee 1500x1500 bought through Ooznest, with a Duet controller. I’ve mucked about making a few basic signs and two sided boxes using v carve pro with no issues at all. I’m now trying to make a template for a table leg from a model in Fusion 360. I’ve gone through the CAM process and the simulation looks exactly as it should. When running on the machine it makes one pass then stops, with the following messages on the duet screen “G19 command not supported” “G2/G3 no I or J or R parameter” I did the Cam process again changing only how the corners were machined, (it was at a corner that the machine stopped). It did exactly the same thing but with the G19 substituted for G18. A check on the internet shows G19 and G18 codes are something to do with arcs? This is a straight sided model. Any help would be appreciated. I am a complete beginner so simple would be good! Stay safe in these strange times. Thanks Mark
What post processor are you using? You should be using this one; https://ooznest.co.uk/wp-content/uploads/2019/02/Fusion-v1.0.1.zip Alex.
Hi Alex, Thanks for the response. No i'm not. I saw that on the ooznest site and thought it might be part of the problem but knowing nothing about G-code, post processing and the like I didn't want to muck anything up. A completely noddy question, but I'm assuming I select this rather than grbl at the post processing stage within fusion, do I also need to change a setting in the duet controller as i seem to remember a setting in there that I had to change to grbl. I'm not sure if the question makes any sense!! Thanks for your patience. Mark
No, you didn't change anything in the Duet firmware to enable grbl. It's all g-code, but comes in different "flavours" - basically a selection or subset of the g-codes available. Grbl is a widely used subset in the hobby CNC field, but the Duet uses rep-rap - originally developed for 3d printers but much modified by Ooznest for the Duet firmware. They are very similar, but not identical in the range of commands they allow you to use. Duet users need to be aware of this when asking for help as they are quite likely to be offered a "grbl" solution that may not work. Alex.
PS, @Mark Bullock , your design may not have any curves, but your g-code may still contain arc commands (G2/G3) as your toolpath may include a spiral at the start of a cut (so the bit is fed gradually into the work). Alex.
