[MENTION=195134]edthesped[/MENTION],

I have the design for two versions of the calibration rig nearly completed. They are basically buildable with off the shelf parts. There are four parts that require a drill press and two of those require a tap to cut threads for the spoke holders. The smaller, cheaper version does not require the tap. When I have one built, I will post a complete parts list. I have most of the parts already with the rest on the way. I am pretty sure it is a sound design, but of course until one is actually built I cannot be 100% certain.

Oh and I changed one part on the tensiometer, the M2 x 10 and M2 nut where changed to M3 for the latest version up on Thingiverse.