Re: [CAD_CAM_EDM_DRO] Need a vacuum system for acrylic sheets

Kevin,

what are the size of the parts? How many of the same parts would you be
cutting?

What type material are you cutting?

Basically you have two types of vacuum systems. One is the high vacuum low
flow system and the other is the high flow lower vacuum. For the high flow
system the vacuum should be around 15".

For the high vacuum you are not allowed any leakage. For the high vacuum, I
have some die cut flat rubber circles. Actually it is a series of circles
with the largest being about 4" in diameter. This gives me the support and
in my case when I am cutting plastic sheet a way to seal the plastic to the
seal and the seal has a sticky surface that is applied to the melamine type
surface. I then have a hole inside the circle that goes back to the vacuum
system.

There is a way to do it, so don't give up yet.


Bob Campbell
Bob@...
www.campbelldesigns.com
Breakout board
THC board sets
CNC router plans
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----- Original Message -----
From: "kdoney_63021" <kdoney_63021@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, January 11, 2005 8:58 PM
Subject: [CAD_CAM_EDM_DRO] Need a vacuum system for acrylic sheets


>
>
> I have tried small vacuum pumps, with no success. I have even tried a
> shop wet dry vac with no success. Has anyone used a venturi system
> for large sheet work? I am using bullet catches through MDF (atually
> melamine) with about an inch of vacuum space. Is there a better way.
> I would be interested in purchasing a system if I could find one that
> would work with Bob Campbell's gantry design (low to the ground).
>
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