I dthink I can work up something. We can start with this.
2 MXL pulleys and a belt. This sets up a 4 to 1 reduction.
A 6A16-072NF3708 .080 (MXL) Pitch, 72 Teeth, Aluminum Alloy Timing Pulley 1 Each $12.36
A 6A16-018DF3708 .080 (MXL) Pitch, 18 Teeth, Aluminum Alloy Timing Pulley 1 Each $9.14
A 6B16-D160037 .080" (MXL) Pitch, 160 Teeth, 3/8" Wide, Polyurethane Belt 1 Each $7.18
Then I got a stepper motor with plug installed from Shaun at Zenbot. That makes it real easy to switch Y to A axis. You can use X to A also for longer stock. I have not done that yet.
Some 1/4 inch shaft collars from Graingers and some 1/4 inch bolts, nuts and washers from Lowes, Homedepot or whoever.
I cut all the parts out of red oak. 2 bases, 2 supports, and one motor mount.
I can provide the g-code if you like.