CV Joint for mill

I was considering using a constant velocity joint to allow me to
alter the angle of the cutter on my mill for 5 axis positioning. It
seems like this would be easier to do than using three gears. My
mills head is part of the base and doesn't tilt. I thought this would
be easy but I've tried a bunch of google searches on CV joints,
Rzeppa and haven't had any luck. I found a lot of drive shafts for
cars. McMaster only has low speed joints.

I was hoping to find a Rzeppa joint for about a 3/4" to 1" shaft that
would allow around 45 degrees of motion. I did find one link for back
to back universals but it requires a sliding spline.

Would this work? Any suggestions on a supplier?

Roger S