I use Solidworks CAM & the large CNC. If you can’t get it sorted, let me know. Here’s a list of things that I try to remember:
I’ve found the Z to be a little bit unstable, a little variation over the length of the table. Some fixes were made to the machine that should fix it, but I haven’t verified it yet. It depends on your part how critical this is. If Z over a large area is critical, check the grooves in the table to see if they are mostly equal-depth across the table. X&Y are accurate to greater than 0.2mm across the table, and that was just as good as I could tell with my testing. I haven’t checked the accuracy of rack-adjustment lately. I plan on doing that in a few weeks. This will only matter on huge 4x8 pieces that need tight mechanical fits across the length.
The Post-processor I used for linux CNC… I had to disable the function generation feature. I think LinuxCNC was upgraded recently, so maybe iit’ll like functions more? Not sure about that. I’d suggest disabling use of functions.
In Soildworks CAM, I had to disable G43/tool offset, but leave cutter comp on. This forces SWCAM to generate toolpaths that take into account the tool width.
Solidworks CAM internally makes use of tool switching. You need to ensure all tools are set to 0/0/0/0 offset. You can go to the file menu, and there’s something to view the tool table. View it, and it should be all blank. If there’s numbers in there, it will cause problems. You need to check this every time you step up to the machine. Every now and then somehow it gets set somewhere, and if I don’t catch it, it ruins my piece.
I have to down-rate the speed that SWCAM picks for the machine. I have to drop both the feed and speed to 40% of the generated value. But that may partially be because I’m cutting metal, or solidworks wants a higher speed. Or both.
I select a light-duty machine, with an 18k spindle speed.