Comments on: Building Vacuum Veneer Press

By: Neal Ferri

Neal Ferri — Tue, 09 Apr 2013 19:52:32 +0000

You could think about using a exhaust hose on the end of the venturi and then place the hose in a cardboard box. Cuts the noise down almost completely and then you don't have to worry about blowing sawdust around the shop. Also if you need a vacuum bag you can check out these guys http://www.qualityvak.com

By: Steve_OH

Steve_OH — Fri, 24 Jun 2011 17:01:54 +0000

The venturi IS a vacuum pump, albeit one in which the only moving part is air. Obviously, there is no noise when the system isn’t running. The question is how much noise there is when the system IS running, from the air rushing through the venturi. THAT is what I found to be unbearably loud.

-Steve

By: chucksdust

chucksdust — Fri, 24 Jun 2011 15:26:04 +0000

Forgot about the PDF break down sheet of all the systems and
there requirements, pretty handy!
http://www.joewoodworker.com/docs/vacuumpresschart.pdf
Charlie

By: chucksdust

chucksdust — Fri, 24 Jun 2011 15:08:46 +0000

Steve,
If you follow the link below and go about half way down the page you will find the requirements based on bag size
you want to use.
http://www.veneersupplies.com/products/Project-V2-Auto-Cycling-Venturi-Vacuum-Press-Kit.html
I was mostly wondering what type of small compressor you had because it is hard to find a small format compressor with tat much power these days any suggestions?
Charlie

By: Steve Shanesy

Steve Shanesy — Fri, 24 Jun 2011 14:16:30 +0000

Steve,
I’m not using a vacuum pump at all. Just the compressor with the vacuum generating venturi. Once the air is evacuated from the bag (less than a minute), there’s no sound at all from the system or compressor.

By: Steve Shanesy

Steve Shanesy — Fri, 24 Jun 2011 13:48:31 +0000

Hi, Charlie,
My compressor is a Porter/Cable Sidestack model CF2400. It’s probably 10-years-old, maybe more. It’s 2 hp, 6.1cfm at 90psi with tank capacity of 4 gal. I’m investigating just how small a compressor can be used with this system and not strain anything. Will advise.

By: chucksdust

chucksdust — Fri, 24 Jun 2011 11:31:17 +0000

Steve,
Thanks for the great post, I look forward to the DVD. One quick question, what kind of compressor are you using with this? It seems almost double what my “smallish” unit will pull, 3SCFM at 90psi?
Charlie

By: Steve_OH

Steve_OH — Fri, 24 Jun 2011 02:25:57 +0000

The last time I used a venturi vacuum pump (a very long time ago, as a postdoc doing physics research), it was shriekingly loud, even with the muffler in place. How loud is the one in the kit?

You can also get a venturi pump that works with water rather than compressed air. It’s pretty quiet, but it does consume a lot of water, of course.

-Steve

By: Al Navas

Al Navas — Fri, 24 Jun 2011 01:53:26 +0000

Glad to pitch in, Steve. I am looking forward to the DVD, and the bent lams!

By: Steve Shanesy

Steve Shanesy — Fri, 24 Jun 2011 01:07:57 +0000

Al, you are 100% correct and I’ve updated the post. Thanks. And why is it we don’t listen to those little niggling sensations that question something, as I did when I wrote the post and put that number in. I stopped and though about it for a few seconds and moved on. Got to pay attention to those first instincts. They are so often right.