TwoUp! (v2) Y-Axis Belt Holder

Simple replacement for the stock MDF belt holders. Reuse M4 screws that came with the TwoUp. Threads well; but feel free to use M4 nuts if it's not tight enough for you.

Update: (25-Jan-2016) A heavily modified design that eliminates one bolt per holder and allows for greater variability in the x-dimension position of the belt. Please try it and let me know what you think.