Wall-mounted 4xiDraw

A lot of people asked me they wanted a larger version of 4xiDraw. But just using larger rods was not the answer unless you just wanted a couple of inches more.

A recent Arts project required a wall-mounted plotter that could do 3x2 feet, so I developed this variation that belt manufacturers are going to love ('cause it uses even longer belts than before).

I have not yet finished the whole assembly but it has reached a point where I am confident the system is going to work ok. A video of it working will be added as soon as I finish the build process.

Please note that a couple of springs will be needed in the bottom of the pen carriage as gravity will not pull the carriage down in this new setup.

A 3D view of the model is available: https://a360.co/2KKoF8T

Wheels would use 608 bearings pushed in.

And it is finally working https://youtu.be/nHzPLjGL6rc

And it can work horizontally too: https://youtu.be/XuJxYQoQShk

###Upgraded parts:
I have simplified the design, be