Sat down last night and did most of the physical assembly. I still need to do the belting, wiring, and install the waste board. I installed the X carriage upside down last night, and had to redo that, but aside from that, so far so good.
I do have some notes.
When assembling the Y plates with Nema 23 motors, the instructions have you install the Smooth Idlers first. Doing so makes two of the mounting holes for the Nema 23s difficult to access. It is much easier to install the idlers last.
This video by @RobertA_Rieke came in really handy with the Z motor https://www.youtube.com/watch?v=BuDl0jtCG3A. The only thing I did differently was to loosely fit the belt as I slid the stepper motor in for initial adjustments.
Peter (@New_Brit_Workshop) also has some really helpful videos on this.
Mounting the Bosch Colt spindle and Z plate was interesting. The instructions consist of just a video with no BOM. To find the Core Component BOM, look at the instructions for the 24v spindle.
The Bosch Colt mount in the video has the Inventables logo affixed opposite of the one that came with my kit. This means that the instructions are 180 degrees inverted from my machine. The two screws on the mount are on opposite sides from what is shown. You have to look really closely in the video to see it.
The video also never tells you which sized screws go where. The screws on the front of the mounting bracket are two different sizes, so I just guessed and put the longer one in the hole for tightening the Colt in the bracket. That seems to work, but I have no idea if it is right or not.
When attaching the Z plate to the Delrin nut, another issue arises. Due to the lack of a BOM in this section, there is no indication of which screws should be used to affix it. The Bosch Colt instructions just call them “short screws”. Fortunately at this point in the instructions there were not many parts left, and I was able to suss out that I should use the remaining 10mm screws.
Other than these small problems, it all seemed to go well thanks to the help here as well as the thorough instructions. This weekend I get to tackle electronics…yay!