Please bear with me as I am not skilled at using Fusion 360 and the CAM features. I am also not skilled in describing the geometry of Cartesian moves.
I needed to make a piece of equipment that required solid modeling to get all the parts right. So I built up a model in Fusion 360 with little effort ( I am an old ProE hand). Then I went to CAM several of the sheet steel parts to cut out with the plasma cutter using PlasmaC for the control. I used the PlasmaC post processor for Fusion 360 posted at the top of the topics. It took a bit of work to get everything setup and going but in the end I was able to get the models posted without any reported errors. Upon loading the Gcode into Plasmac I was greeted with errors on some of the arc moves. While the start and end points of the arcs were correct the posted I and J values were not on the blocks that error-ed out. The first thing I did notice was that the posted precision was rather excessive for imperial units, I reduced the posted precision to 4 places for imperial units with no change in the reported errors on loading. Because these are simple rectilinear parts I was able to manually fix the code to produce the parts.
The errors always occurred with two types of moves. A G2 (clockwise move) with the arc in the 4th quadrant and a G3 ( counter clockwise move) with the arc in the 2nd quadrant. The errors are very repeatable with minor geometry changes producing the same errors. So for now it is back to Inkscape and SheetCam for me.
One other thing, is there a way in Fusion 360 to do nesting? I like to cut a whole sheet of mixed parts at a time. I know how to do it manually by using work piece offsets but that isn't nice and graphically easy to do.
John
