Titebond extend gluing times.

[Farrell]

I was wondering this exact thing myself. I am STILL constructing a couple massive clamps for forming/laminating 9-inch wide ribs. Parts of my jig have required laminating pieces of wood that measure 9 inches by up to 59 inches. I have been using regular Titebond and Titebond II and spreading it out with a 3-inch-wide roller (thanks Ron O. for the idea - really spreads even and fast). When I need to glue up six rib laminations at a time, even with the glue going onto a piece really fast, it still takes a good 10 minutes to get all the clamps (20 of 'em) on the jig and real snug (I'm working on a system to reduce this time). So I have the concern that gluing the rib together with this schedule may result in less-than-optimal glue joints.

I was thinking that I should be using Titebond Extend. Or liquid (cold) hide glue. What are thoughts on the good ol' hide glue - it has lots of working time - ribs and panels are not for underwater work, are they?

Terry Farrell
  
----- Original Message ----- 
From: "Overs Pianos" <sec@overspianos.com.au>
To: "Pianotech" <pianotech@ptg.org>
Sent: Friday, August 29, 2003 7:51 PM
Subject: Titebond extend gluing times.


> Hi all,
> 
> I am wondering if anyone has already had experience using both 
> Titebond Regular and Titebond Extend?
> 
> I have been using our new vacuum press for some weeks now, building 
> sound board test samples of one rib with a strip of sound board panel 
> attached. So far I've been using Titebond Regular since I've only 
> been gluing one rib at a time. We are applying the glue with a short 
> knap paint roller, and I've learned to apply just the right amount so 
> that we achieve a good glue joint without having any squeeze-out. 
> This is important when using a vacuum press since there is no 
> opportunity to wipe away excess glue until the job is taken off the 
> press, by which time is too late.
> 
> When using Titebond regular, samples can be taken out of the press in 
> 40 mins. While I will test times with Extend, I thought someone might 
> already have an idea just how much longer Extend takes to set, to 
> help me get started with this glue. In addition to its ability to 
> allow longer set up times, Extend is a bit stronger than Regular.
> 
> After many weeks of testing, I seem to be honing in on a totally new 
> sound board design. While I can tell you that we will be using a 
> laminated panel and the ribs are fully machine crowned, I can't 
> reveal anything further on the design just yet, I'll release details 
> as soon as we are able.
> 
> Best,
> Ron O.
> -- 
> 
> OVERS PIANOS - SYDNEY
>       Grand Piano Manufacturers
>       _______________________
> 
> Web http://overspianos.com.au
> mailto:ron@overspianos.com.au
>       _______________________
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