@takitus & @reevesjack85, here’s a build tip thread on the Inventables board that I relied heavily on.
My tips…plan ahead for where you’ll put the electronics and have as much wire as you’ll need handy - then use that instead of what they give you. They give you a pretty minimal amount in the kit, so rather than to splice in another length, just get full lengths of what you’ll need (4 lengths of shielded 18-4 for the stepper motors and 3 lengths of 20-2 (anything form 20 > 24 will work) for homing/limit switches, ). The limit/homing wire isn’t shielded out of the box, but some people report that it can pick up some noise and they recommend swapping to shielded. I didn’t but wish I had, just in case.
I also recommend checking out what others have done to make the wiring as clean as you can get. Heat shrink tube, braided wiring sleeves, spade connectors - make it neat. Handy things to have during your build - zip ties, more heat shrink tube than you think you’ll need - get a variety pack so you have lots of sizes handy (and a heat gun), and a fish or luggage scale so you can get the right amount of tension on your belts. And unless you have great eyes and a super steady hand, get a soldering station with a magnifying glass & light, and have some of the really thin solder on hand. Oh - and if you got the 1000mm one, have a big work surface to assemble this thing!
The only big thing I’d do differently in terms of the actual build (besides having longer lengths of wire on-hand from the start) is that since I’m a mile from the ocean and it’s in my garage with vents and an always-open skylight, in hindsight I wish I’d swapped out all the fasteners at the very beginning for stainless steel. After a few weeks in the garage, my fasteners are rusting, and the thought of going through and replacing them all after the fact isn’t fun.
Personally I’m not a fan of how the electronics look kind of hacked together, so once the X-Controller is out, I may pick one up. (they’re testing it right now with some of the users)