Slot Bot, Large CoreXY Printer

***Update 03-03-15***
Installed hotend and now printing! Here's a video of it printing:
https://www.youtube.com/watch?v=vVa2gHCmJDo


***Update, 02-15-15***
I'm waiting on a new hotend then I'll be able to test it out.

This is my latest project, the Slot Bot! It is a large format CoreXY printer with 335mm X 335mm x 300mm (13"x13"x12") build volume. 1.5" slotted angle in 2' lengths forms the main frame of it. One of my main goals was to make a standardized frame that could be built from a locally sourced material. Home Depot and Lowes carry 2' sections of slotted angle as well as longer sections. Menards also carrys it. The frame is very stiff and only requires 3 X 5/16 or 8mm screws at each corner.

I've currently designed it for 5/8" or 16mm rod, which adds to the rigidity. I got a great deal on 5/8" stainless steel rod and I'm using Lm16uu bearings with no problems. I will make a 10-12 mm version of parts in the future since 16 mm rod is a little overkill.

The z-