Ha, ha. No kidding. I’ve been planning on adding a rotary axis since before building my Primo. It’s one of the reasons I built a drop table. But after seeing @Legolor ’s recent post I started working on a concept.
My current concept is for a dedicated machine, mainly for rigidity (hoping to eventually cutting Aluminum and brass). I was thinking to have ~3.5” in Z travel for a max workpiece size of ~6”. I can’t really think of what I would make larger than that except maybe bowles but then I’ll have a cutter issue so I need to think about that a bit more.
I’m planning on using an Arduino/grbl shield for cost/simplicity but I believe that will make things more challenging if I want to run a laser. I’m also thinking about using a higher torque Nema 23 for the Y/rotary axis but that will require a non-standard driver so I may start with a 17.
Lots to ponder. 