Re: Acme, ball screw or rack for wood router?

The word that gets my attention is dust extraction. What about screw
chamber pressurization ? Seems that if you really needed to use ball
screws, installing them in a simple chamber with some sort of plastic
guard.

Thinking a thin piece of plastic that moved as the carrage did.

Dave





--- In CAD_CAM_EDM_DRO@yahoogroups.com, "echnidna" <echnidna@y...>
wrote:

> There will always be some superfine dust around no matter how good
> your dust extraction system is.
>
>
> So forget ballscrews and leadscrews (and linear bearings on ways).
>
>
> Ultra fine dust will eventually work into the mechanisms and cause
> problems.
>
>
> The most dust tolerant drives are timing belts or roller chain

drives,

> though a rack can work if you mount it teeth down with the drive

gear

> below it so the dust is less likely to settle in the rack. If you
> decide on belt drive, mount the belt with the teeth facing down.
>
>
>
>
> I expect some expert CNC experts may disagree with these comments

as

> their setups have worked ok to date. But I speak from a lifetimes
> experience as a professional woodworker and know that as machines
> loosen up a bit the dust will start to work its way inside the most
> delicate places.
>
>
>
>
> Regards
>
>
> Bob Thomas.
>
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "ddgman2001" <sheldon@d...>
> wrote:
>
>
> > What is the best drive system for a wood router considering the
> dusty
>
>
> > environment?