Re: [CAD_CAM_EDM_DRO] Re: PC dust issues

Having worked in a computer shop for 4 years, i say get outside air, and
check the inside and clean the inside of the computer often will be your
best bet. Even a 2 micro filter will fill the boards almost as fast. cul
brian f.

----- Original Message -----
From: "turbulatordude" <davemucha@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, January 02, 2004 1:27 PM
Subject: [CAD_CAM_EDM_DRO] Re: PC dust issues


> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Les Newell <lesnewell@f...>
> wrote:
> > I would disagree with this. The fans should be pushing air into the
> > cabinet not drawing it out. You want a positive pressure in the
> cabinet
> > otherwise dust will be drawn in through mounting holes, cable
> exits,
> > panel joins etc. This is why many filters have mountings that are
> > compatible with fan mounting holes.
> >
> > Les
>
>
>
> Two schools of thought, Blowing air in assures you that you are
> getting outside air to cool with.
> sucking air out assures you that you are removing hot air.
>
> Regardless of how you do it, particulate removal is best done at the
> source where concentratons are highest and efficiencies of removal
> are greatest.
>
> Point of source, or point of generation is best. There are a few
> ways to connect a vacuume to a router and not have it get in the way.
>
> Also particulate removal works best in stages. The big stuff with
> gravity if possible, the floating dust with very low air velocity
> (small fan, larger chamber)
>
> Shop vac's use a vortex to let the larger stuff spin out of the air
> stream, and long stringy stuff to swirl around the center and then a
> filter to catch the very light stuff. The larger the container and
> the slower the swirl, the smaller particles it will catch.
>
> Also, if you have the space, a large wooden frame with some bed
> sheets attached could be the final, very low velocity filter section.
>
> Dave
> If a cluttered shop is the sign of a cluttered mind..
> what is and empty shop the sign of ?
>
>
> ps: I'm going to have to check with Bill and Tim on this being OT.
> It is VERY closly related to building a home machine, and although
> not directly to the CNC nature, it falls extreemly short of machine
> use or commercial......
>
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