Originally Posted by wildcat  Disclaimer: I don't use Rhino.
You need to be consistent with your assignment of the origin in both your CAM and your setup. In other words, the origin of your actual stock needs to match the origin of your stock in your CAM. Select your origin based on what is easiest to setup. For example, I always the bottom left edge to work in the first quadrant and because of how I use a edge probe. Setting different origins in the CAM will affect the values in the G code but not the distances. I.e., all the operations will be shifted some amount but will still cut just as much. This can be compensated for by setting the DROs by negative of that amount if a mistake was made. Hope that all makes sense. |
Thank you, that's exactly what I wanted to hear. Since the things I make tend to be sylletrical right down the middle it makes the most sense to me to have 0,0,0 be right along that line of symmeter (at one end of it actually) like point 2 in the diagram in post #1. I assumed the origin should be consistent in the cam and Mach and everything should follow through from there. But I wanted to hear someone else with experience comfirm it.
Now the next question, and this is one you probably can't answer (not being a rhino user) and I will have to find out either from trial and error or maybe from asking the RhinoCAM folks. If my origin is set to one end of my line of symmetry in Rhino (point 2), when I start the CAM plugin, does it automatically pick up that origin from the CAD or do I specifically have to assign it myself?