Re: [CAD_CAM_EDM_DRO] Rack & Pinion

> The Cad Cut CNC plans uses a Rack & Pinion instead of a Ball Screw or
> Acme Screw. What are the advantages and disadvantages of a Rack &
> Pinion over a Ball Screw? Any comments is appreciated.

Cost.

Rack and pinion will, generally, be much cheaper than a ballscrew.

Ballscrews are, generally, more efficient and a lot more precise than rack
and pinion mechanisms. Rack and pinions require each tooth be machined as a
separate, discrete entity. A ballscrew can be rolled as one continuous unit,
removing the cogging action that is inherent with gearing.

John