Kossel Rod Jig for OpenBeam

The original holders fit the Traxxas ball ends perfectly (thanks!), but I was too lazy to go get a piece of wood from the hardware store, then measure, cut, mark, drill, etc. Since I already had the OpenBeam for the printer... why not just reuse it. So I made this minor modification, reusing all the hard work for the ball-end holder shape. Number of holders is reconfigurable.