Figured I needed to work on my AutoCad skills, so I designed this simple jig plan and then built it from my plans. It actually works quite well, so I'm posting it here for others to use. All measurements are SAE actual size, not nominal.
Hope someone finds it useful.
FYI, for the friction plates on the bottom of the jig, I added some skateboard tape to where they meet the base to add some grab to the assembly.
The carbon fiber 'rods' are just shafts of broken arrows that I cut up and epoxied in.
Really, the hardest part was just setting up my router to make the slot down the length of the base. Might be easier to just take some 1x material and sandwich it around some 1/4" scrap spacers to create that slot.