Re: Acme Screw vs Belt Drive: Price Comparison

One calculation you didn't list was table speed.

a 4 TPI screw requires a motor to spin 4 times per inch.
a belt drive may be 1 revolution for 2-3 inches, or geared for the
same 4:1. In that case, the belt offers a little more variation
than the screw.

Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "pilgriwr" <cnuk@s...> wrote:
> I am in the process of building a XY router table approx 24" x
24".
> I have been going back and forth on belt vs. acme screw drive. Yes
> acme gives more precision, but I also calculate that it is more
> expensive. Belts seems more forgiving to alignment tolerances as
> well. I live in Canada and have been comparing price primarily at
> SDP/SI, Techno-Isel, PIC-Design, and McMaster Carr.
>
> Q: Has anyone else recently gone through this debate and come to a
> conclusion on which system builds the more inexpensive system?
>
> Q: Does anyone have a recommendation for sourcing parts in Canada?
>
> Thank You