Adapter Plate to use Universal stand-alone filament holder on top of Makerfarm i3v Aluminum Extrusion

This is an adapter plate to be used with http://www.thingiverse.com/thing:508896
I did not see an optional plate that would work with my machine, so I designed one in openscad. I used a spare M5x30mm bolt I had from the build & bought 3-M4x16mm bolts from the local hardware store. I also had to drill out the the holes a little in the tripod base with a 9/64" drill bit. M3.5x14mm would probably work better & not need to drill out, but could only find the M4 bolts locally. The M5 bolt thread