There are strange characters in your text file right after the spots where your posts are getting cut off, the forum system must be choking on them.
The X2s we have are earmarked for filling Bukito orders, and we probably won't have them for sale separately any time soon. This custom version will probably not be available directly from Panucatt, though it's my understanding that a version without our customizations sill be available at some point. Our version requires a set of special breakout boards designed by me, and if you're DIYing a machine, you're probably better off using a more generic controller like the aforementioned un-customized Azteeg X2 (not yet available) or an X1, even a printrboard. Any of these will have connector options that are easier to adapt to your build than our specialized wiring system.
There isn't a wiring diagram for our wiring system because all of the wires are pre-routed and can't be plugged in any other way. If you use one of the other boards, you'll want to use it's diagram.
You should not call your machine a Bukito, but rather a Bukito derivative.
None of our printed or lasercut parts would not work if they were made of metal instead, though some of the shapes would have to be modified to be produced by subtractive methods.