I want to CNC an rack & pinion gear with 4 mm pitch, just like our wood shop’s MultiCam has on its long 10’ axis. My rack will only be 8’ long and the gear diameter should be as small as possible while still being efficient; I’m guessing 12 or 16 teeth.
My materials are Acetal and aluminum; not much force is needed for my application so Acetal should be fine.
This one looks like it would work:
http://hessmer.org/gears/InvoluteSpurGearBuilder.html
Advice, please?
Bruce Mihura