Darryl Keil Last Activity 2024-10-10 3:42 PM
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ilija

Posts: 2

Joined: 2009-01-05

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Subject : solid wood
Posted : 2009-01-05 1:49 PM
Post #35173
is it possible to laminate solid wood in a vacuum bag.


 
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ilija

Posts: 2

Joined: 2009-01-05

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Subject : RE: solid wood
Posted : 2009-01-05 3:14 PM
Post #35174 - In reply to #35173
i am not talking about bent lamination i am talking about laminating two pieces of 1 inch thick stock.


 
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ckurak

Posts: 107

Joined: 2006-10-28
Location: Florida

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Subject : RE: solid wood
Posted : 2009-01-05 3:26 PM
Post #35175 - In reply to #35174
I have done that in my flip-top vacuum table. I have laminated solid wood as well as sheets of plywood.

I am not sure how "flat" you would get it in a bag though. That may or may not be an issue.

Charles


 
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Brian Gray

Posts: 339

Joined: 2004-01-21
Location: Sandusky, OH

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Subject : RE: solid wood
Posted : 2009-01-05 11:14 PM
Post #35176 - In reply to #35175
Sure.

Think about a vacuum bag as a really huge clamp.

But this clamp applies pressure uniformly across the piece.

That's it.

All you are doing is removing all the air, which reduces the atmospheric pressure to One Atmosphere.

This can fluctuate from where you live (Death Valley vs. Mount Everest), but my understanding is that you can expect 1 ton per square foot.

That's a nice clamp.


 
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Brad

Posts: 87

Joined: 2008-04-22

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Subject : RE: solid wood
Posted : 2009-01-07 6:25 PM
Post #35177 - In reply to #35173
I did some experiments with 1/2" stock not long ago and I did find that the 15psi would not overcome much in the way of stock imperfections. Keep in mind that 15psi is quite a bit shy of what the manuf specs state to achieve the full bond strength of a PVA so if this is by anymeans a structural application I would be cautious.

Brad


 
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Gary H Phillips

Posts: 46

Joined: 2007-05-06
Location: Seekonk, MA

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Subject : RE: solid wood
Posted : 2009-01-11 9:17 AM
Post #35191 - In reply to #35173
that is one of the reasons I built my rather large vacuum table. Sure I use built up plywood laminations, and can make them, but for solid wood, I don't like to use anything thicker than 6/4 Poplar (or whatever I'm using)in our organ work. Anything thicker, I want to make up from 4/4 boards. If your "table" surface is flat, and ours is, your wood will be perfectly flat and did I say stable? Man, what away to do things; I'm glad I looked into this system and decided to buy from Vacu Press, man, hey are the best!

Last year,I wrote an article about how I built our table (part I)and will be finishing part II up very soon as it's about done now (the table that is) and would be perfectly happy to forward it to you if you send me an eamail at: gary@ghpassociates.com with the word "Vacuum" in the subject line.


Cheers

Gary
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