Well, I fixed the nut lock. I printed it waaay overkill, with 100% infill and 0.1mm layers. They layer thing was a mistake, but it looks really great now.
So I actually got to the point where I could cut something, and I started with the vicious logo, and some foam. I posted more details about it on the Troubleshooting thread, but basically, the Z axis stopped working, and I think it’s probably the driver. The end result was that all the travel moves made cuts, but I still hit a milestone today, and I’m really excited about this thing working.