Vacuum clamps

discussion of design changes / improvements / suggestions
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zerblatt007
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Vacuum clamps

Post by zerblatt007 » Tue Mar 19, 2013 11:21 am

This would probably not fit every job, but could it be a usable mount alternative?
http://www.youtube.com/watch?v=Z_azh7RczPk

It does not seem very expensive either..
http://www.ebay.com/itm/VACUUM-CLAMPS-P ... 3f0dfdf18b

Anybody tried these Vacuum Clamps with the ShapeOko?
Would it be difficult to avoid saw dust getting into the pump and destroy it?
Shapeoko #958: Dual-Y drive, Double-X, Belt on outside, 1m Y-Axis, Acme Z, Opened up and boxed in. Kress 1050 Spindle.

cvoinescu
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Re: Vacuum clamps

Post by cvoinescu » Tue Mar 19, 2013 12:34 pm

Those vacuum clamps look very nice. There are many other options, and professionals use similar devices. Here's one example. There are smaller models too, of course. You have a ShapeOko, you can make your own vacuum clamps!
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

DanMc
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Re: Vacuum clamps

Post by DanMc » Tue Mar 19, 2013 5:28 pm

It does not seem very expensive either..
http://www.ebay.com/itm/VACUUM-CLAMPS-P ... 3f0dfdf18b
That's a pretty good price, it's hard to find a vacuum venturi by itself for under $50.

There is no vacuum per se on the ones you linked to, it's a venturi which generates vacuum from compressed air. You would need a compressor but no worries about dust in pumps.

zerblatt007
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Re: Vacuum clamps

Post by zerblatt007 » Wed Mar 20, 2013 9:25 am

DanMc wrote:There is no vacuum per se on the ones you linked to, it's a venturi which generates vacuum from compressed air. You would need a compressor but no worries about dust in pumps.
Ah, ok - thanks. So that is what venturi means..
I was searching for the picture of the compressor as I thought that was what venturi was.. :-/
But I tiny compressor should do the trick then?
Shapeoko #958: Dual-Y drive, Double-X, Belt on outside, 1m Y-Axis, Acme Z, Opened up and boxed in. Kress 1050 Spindle.

Cwalster
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Re: Vacuum clamps

Post by Cwalster » Wed Mar 20, 2013 5:15 pm

Venturis usually require a fairly high amount of compressed air. I would contact the seller about the cfm requirement before you start sizing your compressor.

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