Today I worked on finishing up the first operations on the final set of parts and making a rotary fixture plate to attach them to.
I was able to get the first operation done on the final set of parts without any issues and started moving over to the fixture plate. I spent a couple of minutes coming up with the design in fusion360 and then programmed the CAM and sent it off to the machine. The fixture plate is a small 3/4" block on one side, and 2"x1.5"x0.5" plate on the other with three holes matching the ones on the parts to bolt them together. I'll be using a square chuck collet to hold the fixture plate and using 1/4" pins on either side with a bolt in the middle, giving a very secure workholding fixture.
Unfortunately, I completely forgot that the center hole needed to be threaded, and accidentally milled it out too large and had to scrap the fixture and start over. I also was cutting the clearance on the sidewalls of the fixture plate when drilling it out and caused the 1/4" drill bit of rubbing against the sidewall, leaving a mark and the tool to deflect. I changed the design a bit and added a small radius around the hole to allow the drill sufficient room to drop down without interference. I then flipped the fixture plate over and manually removed the last 1/4" backing to bring it down to its final height.
Once I finished the fixture plate, I removed the vice and cleaned out the machine to prepare for the 4th axis to come down. There wasn't enough time to dial it in, so I'll be working on that tomorrow. Overall it's coming along nicely, didn't get as far as I thought I would but making steady progress.