I find the original design really good but did a remix to add some features. I simplified the slots for the clamps to be square to fit my Metabo clamps. The Jig now also prints without supports. 

I made the Jig Modular so I do not have to print the hole Jig for each new radius. Just print a new Radius part if needed.

Printing

I printed mine with a 0,8mm nozzle and 0,4mm layer height to save some time. The parts fit togehter perfect with theese settings on the prusa mini.  

Edit: 

Added a Loose fit version of the base if the fit is too tight with your printer and settings.

Printed with Prusament PLA Galaxy Black