The outer housing for the moteus servo mk2 is just a precision round tube with some mounting holes drilled peripherally.  Still, manufacturing it was slightly annoying, mostly because of my available machining resources.

Manufacturing

I started off with round tube stock with some extra margin on the inside and outside:

Then I went and used the manual lathe at Artisan’s Asylum to get the correct ID, OD and length:

At this point, I loaded it into the Pocket NC with Sherline 4 jaw chuck, using a 3d printed bracket to align the assembly with the base of the chuck.

Now, I could use the B axis as an indexer, and drill and countersink all the holes.