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dpm99
PostPosted: Wed Oct 05, 2011 9:45 pm 
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Cocobolo
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Joined: Thu Oct 09, 2008 11:27 pm
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Location: McKinney, TX
First name: David
Last Name: Morris
City: McKinney
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Focus: Build
Status: Amateur
Personally, I'm pacing the floor impatiently on this one. Titebond Original is my "go to" adhesive, and I'm anxious to learn what testing will reveal about its sound dampening qualities.

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theguitarwhisperer
PostPosted: Wed Oct 05, 2011 10:23 pm 
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dpm99 wrote:
Personally, I'm pacing the floor impatiently on this one. Titebond Original is my "go to" adhesive, and I'm anxious to learn what testing will reveal about its sound dampening qualities.


I'm a little more concerned with cold creep, lately.

Hey Hugh, what say you? Does Titebond Original Extend creep? For that matter, how serious an issue is cold creep with regular Titebond, especially when compared with your hide glue?

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Kent Chasson
PostPosted: Wed Oct 05, 2011 10:53 pm 
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Andy Birko wrote:
Zlurgh wrote:
I determined the ideal amount of pressure was 250 p.s.i. ....quite a bit really.


So somehow this post re-emerged in my head the other day - I just bought a vacuum pump for vac fixtures on my router but, I figured I could use it down the road for other things such as bagging and stuff.

250psi is a lot more than the 13 or 14psi you get with a vac setup....does this mean we can pretty much forget about bagging to join parts with PVA, or just that we'll have a big glue line?


Andy, are you talking about vacuum clamping braces or some kind of laminates like Zlurgh? Zlurgh is trying to get rid of visible glue lines on a laminate where an acute angled cut goes across the glue. The 250psi is for visual reasons, not structural.

Taylor alone is building about 500 guitars a day and, as far as I know, they are vacuum clamping all the braces. If vacuum pressure was inadequate, they would have figured it out. For structural purposes, vacuum seems to work fine for our needs.

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