Re: [CAD_CAM_EDM_DRO] Re: Holding work down on Router

Mike,

That is the same system that Multicam uses, but they use a commercial blower
for their vacuum system.

With enough vacuum, you can suck down a piece of material through the MDF.
It will not work well for small pieces.

Bob Campbell

----- Original Message -----
From: "aerowright" <mnemesh@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, May 06, 2003 8:59 PM
Subject: [CAD_CAM_EDM_DRO] Re: Holding work down on Router


> A friend has a very large industrial router (I can't remember the
> brand at the moment) with a vacuum table that uses basically a shop
> vac for vacuum. It's not an overly large vacuum motor, and no doubt
> it is noisey, but it will pull vacuum through 3/4" MDF. Yes, through.
> I didn't believe it till I saw it myself. The design of the vacuum
> table is the most interesting thing, it's so simple in design but
> extreamly effective. I'll do my best to descibe it.
>
> The table is 6'x10' measured by my eye. The surface is some kind of
> composite or plastic of some sort. It has grooves routed in it
> running cross pattern lenth and width wise, about .75" wide by .5"
> deep with about an inch between them leaving 1" sq blocks for the
> surface and a complete edge around the work surface, i.e. the grooves
> don't go off the edge. There are six evenly spaced 2-3" holes through
> the table. The bottom of the table has pipe flanges beneath these
> holes and pipes all coming out of one end of the table each with a
> valve, so vacuum can be directed to or shut off from specific areas of
> the table. They are all tied together after the valves and pvc pipe
> is run to the vacuum motor. To get vacuum in the exact area needed
> they use the valves and then place black foam rubber door insulation
> strips in the routed groves. It's a good snug fit and the insulation
> is slightly thicker than the groove is deep. The MDF is the spoil
> board and the foam is placed in the grooves under the perimeter of the
> board. The work piece is placed on top of the mdf and when the vacuum
> is turned on everthing is just sucked down tight. It really is
> amazing to see.
>
> Hope this info may be of use to you.
>
> Regards,
> Mike
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "turbulatordude"
> <davemucha@j...> wrote:
> > Thare are a few guys who do use shop vac's for the table, but they
> > are noisy and large.
> >
> > The neat thing about starting with one, is that latter, when you move
> > up to a higher power vac pump, you still have the shop vac.
> >
> > The real key is making the table so it does not leak. then a small
> > vac pump will work. all you need to do is figure out how to plug the
> > holes near where your thru holes will be.
> >
> > Dave
> >
> >
> >
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "forumtvm" <forumtvm@y...>
> > wrote:
> > > CL <datac@l...> wrote:
> > >
> > > > If you have not played with vacuum yet, what are you waiting
> > > for ?? If
> > > > your doing "small" work, Look for a Gast type Carbon Vane pump.
> > You
> > > > don't need lots of Horsepower, a 1/4 -1/3 hp will do, AS LONG AS
> > > you
> > > > control your leaks. No leaks ? No need for much CFM ! It can be a
> > > 50 or
> > > > 60 hz unit.
> > >
> > > I'll like to make a vacuum tooling plate for the desktop mill.
> > Anyone
> > > ever used a domestic/shop vacuum cleaner for that purpose?
> > >
> > > Peter
>
>
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