Re: PC dust issues

Hello,

I disagree with this approach. "Evacuating the air from within the
box is exactly what you DON'T want to happen... This will PULL air
INTO the box from ANY opening, even really small ones you've
overlooked.

Instead, use a positive pressure system, where you PUSH the air INTO
the box at a greater rate than it can escape.

I use Norelco "clean machine" round air filters. They have a twist
mount design, which can be used with a few drywall screws to provide
for replacement and cleaning.

One nice thing about positive pressure is that you WANT leaks,
because that is how the air gets out... So having a plexiglas front
door with a loose fit will allow the heat to escape, and the airflow
will prevent dirty air from coming in. I have found that by
designing "leaks" intentionally into my enclosures, I don't need
an "output" hole. But you may find having one useful in some
situations. Use a filter on it TOO.

There is also a new company (advertising in the woodworking and
electronics magazines) with a product called dirtbag. It's just that,
a bag of filter material placed completely around the computer.

I prefer the proven positive pressure systems, which are an industry
staple, well-proven, and generally inexpensive to create.

Hope this helps,

Ballendo

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Denis Casserly <denisc@a...>
wrote:

> Hi Dex
> try to arrange the fans so that they draw air through the filters.

An easy way

> to do this is to mount the fans on the equipment cabinet (metal

preferred) so

> that the fans evacuate the air from the inside the cabinet. The

filter can be

> mounted over inlet holes cut into the cabinet sides. Use several

filters if

> you lilke. This draw through arrangement tends to even out the air

pressure

> drop across the filter media which results in more even

distribution of

> airflow and lower air velocity. You also might try using pleated

air filters,

> they are more efficient at trapping fine dust than fiberglass

filters.

> regards,
> Denis
> On Friday 02 January 2004 09:52, dex367 wrote:
> > I am in the finishing phases of the overhall of my 3 axis wood
> > router. I am now wondering how to keep the dust out of my PC and
> > monitor.
> >
> > I was thinking of using an enclosed plywood box with a plexiglass
> > front. It would have on each side furnace forced air filters with
> > muffin fans to move the air. I believe this would do the trick of
> > keeping the electronics clean, cool and within budget.
> >
> > The key board would be outside and have a dust jacket over it. I
> > will have to blow it out every once in a while.
> >
> > Any other ideas?
> >
> > Dex
> >