This part is 9.5" long. I made it by cutting three 1/8" dowel holes in the waste board. One center and the other two 3.75" on either side (on the y axis). I cut matching holes in the stock wood then redefined the bed zero to the dowel hole closest to the door on the y axis. That let me cut this part in 4 setups.
I just made 4 MeshCam files. One for each quadrant. The dowels ensured alignment (pretty close anyway) as I rotated and flipped the part. I defined the machineable area in Meshcam to be just the quadrant that I wanted to cut with just a little overlap. I worked out pretty well. This was the first attempt.
This is similar to using a flip jig except waste board with two dowel pins is the jig and I didn’t mess with the 2-sided machining in MeshCam. It seemed easier to me to just make 4 separate setups which only take a few minutes each anyway.
This is Poplar wood. I used the Carbide3D settings in MeshCam for “soft wood” and it came out great. I enabled arc fitting, checked “don’t machine top of stock” and disabled “use parallel path” and used climb milling.
There were some blending marks. I have my thumb over the biggest one in the picture. I’m not sure why they happened. I used the machine center for the center dowel and put the other two on the y axis.
After spending a day messing with cutting a couple of parts like this I’m convinced that CarbideMotion loses its mind from time to time. I had the cutter ram into parts several times. The machine started the cut too deep a couple of times. etc… I saw it try to touch off the tool indicator several times when it wasn’t over the tool touch off. Eventually I just made sure I turned the machine off and restarted Carbide Motion, and re-zeroed everything every time I started a new setup. I think that is reliable (not positive though).
I thought I’d share the experience. This allows you to make parts larger than 8" on the Nomad. Its quite a hassle but for the occasional time you need it, this method works pretty well.