How important is it to unclamp after glue sets? - Woodworking Talk - Woodworkers Forum

 
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post #1 of 11 Old 01-23-2010, 03:13 PM Thread Starter
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How important is it to unclamp after glue sets?

Does it even matter? I generally use Titebond II for all kinds of wood, mostly edge gluing. Do you usually leave the clamps on for the full 24 hours even though it sets after 30 minutes? Is it necessary for the glue to dry without the pressure of the clamps?

Just wondering. I sometimes glue up and clamp and then forget about it until the next day.

-SW
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post #2 of 11 Old 01-23-2010, 04:06 PM
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I think the only worry is if the humidity changes
it can cause warpage,

I sometimes back the clamps off a bit if I am going
to leave them overnight. The wood absorbs moisture
from the glue and they tighten on their own,


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post #3 of 11 Old 01-23-2010, 04:06 PM
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Dry after 30 mins, strong after 24 HRS

I always leave mine in the clamps as long as possible, especially on a joint that's under stress even though the bottle says "clamp for 30 minutes". I've never had a joint failure when jointed properly and clamped over night. bill

The answer to your question will only be as detailed and specific as the question is detailed and specfic. Good questions also include a sketch or a photo

Last edited by woodnthings; 01-23-2010 at 09:59 PM.
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post #4 of 11 Old 01-23-2010, 09:30 PM
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Usually a glue up is the last thing I do during a day in the shop. Titebond I II III all stay in clamps overnight. AND if it is a local NASCAR weekend, then in clamps until Tuesday.

Use the right tool for the job.

Rich (Tilting right)
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post #5 of 11 Old 01-23-2010, 09:42 PM
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I use Titebond II almost exclusively. I let the glue dry in the clamps for 45-60 minutes depending on the season. The only time I let it dry overnight is when it is the last thing done for the day.

Measure Twice Cut Once -- It's a lot easier to cut more off then it is to cut MORON.
Finishing is 3 parts chemistry and 1 part VooDoo http://lrgwood.com
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post #6 of 11 Old 01-24-2010, 06:35 AM
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The only critical factor that I am aware of it that the clamps generally should be removed before any attempt is made to use the object.

G
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post #7 of 11 Old 01-24-2010, 07:38 AM
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Quote:
Originally Posted by woodnthings View Post
I always leave mine in the clamps as long as possible, especially on a joint that's under stress even though the bottle says "clamp for 30 minutes". I've never had a joint failure when jointed properly and clamped over night. bill

+1


Quote:
Originally Posted by GeorgeC View Post
The only critical factor that I am aware of it that the clamps generally should be removed before any attempt is made to use the object.

G


Very critical. Try not to poke your eye out.






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post #8 of 11 Old 01-24-2010, 09:57 AM Thread Starter
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Quote:
Originally Posted by GeorgeC View Post
The only critical factor that I am aware of it that the clamps generally should be removed before any attempt is made to use the object.

G
Oh, that explains the violent planer incident last night.

Thanks everyone.

Last edited by Streamwinner; 01-24-2010 at 10:06 AM.
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post #9 of 11 Old 01-24-2010, 08:30 PM
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If I have to leave my clamps on overnight, I loosen them just a little.

Red

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post #10 of 11 Old 01-25-2010, 07:56 AM
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Maybe your guys problem is that you are using titbond wood glue. My dad and i have used elmers wood glue for all our glueing for 12 years now and never had a problem. When we glue up cabinet doors we only have enough clamps to glue up 16 doors and when we are doing an entire kitchen we have many more then 16 so we will pull the doors out of the calmps after about 20 min. till we get every thing glued up.
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post #11 of 11 Old 01-25-2010, 08:13 AM
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Been using Titebond II since it was out. Never had a problem that I didn't cause. It was the low temps.

If you glue up something in 50 with Elmers you will get failure too. They are basically the same glue, as all yellow glues are.

Measure Twice Cut Once -- It's a lot easier to cut more off then it is to cut MORON.
Finishing is 3 parts chemistry and 1 part VooDoo http://lrgwood.com
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