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CanisLupus wrote: As you can image, both claim their design is the best. Both claim their approach is used on high-end machines and that demonstrates the superiority of their design.
Ken Rychlik wrote:I have had both and my latest machine is Rack and Pinion for x and y. I can't tell any difference in cut quality from one to the other. Racks require more maintenance, but at least maintenance is inexpensive. Keep em lubed and replace pinion gears every few years. I do think ball screws for the Z is important though.
Ken Rychlik wrote:TReischl, if you still have original pinions after 7 years, you might need to check em.
rscrawford wrote:........
I think what is more important, is how accurately the rails are placed - is the frame milled after its welded to have highly accurate guide rail placement? This will have far more impact on your accuracy than R&P or Ballscrew.
Takes a big mill to do that with a 5 X 10 machine.
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