Anyway, here rev:Alpha of my ShapeOko upgrade on GitHub.
So size was a compromise but I have room for it and I think this space will be worth it. Unlike other things in my garage this will "pay rent". I may have to do some spring cleaning and "evict" some junk to find this a home.
X-Rail and Gantry Improvements
|X Gantry Box like design|
Double X-rails with wlanfox Blocks - It was pretty much a consensus that a Double-X rail would be needed for the meter span. I also thought that the wlanfox Blocks were an excellent idea and be made of 3/4" plywood. I will use M5 threaded rod and nylock nuts to span the distance of the blocks. I think using nylock nuts all around is a good idea as I have had some nuts loosen and fall off in the middle of a job. Also 4 more V-Wheel Kits are needed.
Standard Wheel Carriage Plate - Using these instead of the existing motor plate lowers the X-Rail so that the resulting moment arm is reduced. Forces in the Y direction should have less twisting effect on the Gantry and X-Rail assembly. The draw back of this mod is that the Y motors have to be relocated. You can see in the overview picture that they will be mounted on a fabricated item I call the Motor-Buttress assembly (blue). This will require longer timing belts and two additional Smooth Idler Wheel Kits.
|Standard Wheel Carrage Plate|
|Idler Butress Assembly|