Glue joint failure?

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Forum topic by BigJohn posted 05-18-2015 11:45 PM 1155 views 0 times favorited 9 replies Add to Favorites Watch
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108 posts in 3909 days

05-18-2015 11:45 PM

Hello. I bought some Titebond original glue for a cherry panel. I hand planed the joint and put some glue on. Using mild clamp pressure, I had even squeeze out along the joint. I let it dry for a couple hours and was about to sand the panel. But when I picked it up, the joint came apart. I put pressure on the other joint and it came apart too. Did I do something wrong or get bad glue or what? Never worked with cherry before and don’t know if it just sucked up a lot of glue. Thanks for the advice.

9 replies so far

View jerryminer's profile


923 posts in 1435 days

#1 posted 05-19-2015 12:11 AM

Sounds like a bad batch of glue. I’ve glued a lot of cherry with TB without problems. Cherry is not a problem to glue (as are some exotic species)

Check the date code on the glue bottle. Here’s a quote from the manufacturer on how to read the date code:

Our current lot numbering system is a 10 digit code. The format is: aymmddbat#. The “a” stands for Made in the U.S.A. The “y” is the last digit of the year of manufacture. Digits “mm” represent the month, and “dd” represent the day of the month. The final four digits represent the batch number used for quality control purposes. Therefore, a product with the lot number A104270023 was manufactured on April 27, 2011.

Maybe the glue is old, or maybe it got frozen at some point? If the glue is fresh (less than a year old) and hasn’t been frozen, I would contact Franklin (the manufacturer)—- they are very interested in producing a quality product. I’m sure they will help you.

-- Jerry, making sawdust professionally since 1976

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923 posts in 1435 days

#2 posted 05-19-2015 12:15 AM

p.s. “a couple hours” is not enough time to allow the glue to set before you “put pressure on” the joint. 24 hrs. is much better.

I will often take the clamps off after an hour or so, but I would not sand at that point because of the risk of a “sunken joint”—-nor would I stress the joint—-wait ‘til the next day. Much safer, IMHO

-- Jerry, making sawdust professionally since 1976

View splatman's profile


586 posts in 1393 days

#3 posted 05-19-2015 12:17 AM

Is there glue on both surfaces? If yes, I’d say bad glue.
Glue together other types of wood, say, 2 scraps of pine or maple, and see what happens. Then you’ll know whether the glue or the wood is at fault.

View MT_Stringer's profile


3168 posts in 3225 days

#4 posted 05-19-2015 12:35 AM

I glued a face frame on a cabinet. About 15 – 20 minutes later, I realized I had made a terrible mistake while getting it aligned (long story). So, I tried to pull it off. No going there, nor did a plastic mallet and a board. Then I pounded on it. Still no go. I wound up having to make another cabinet! I was pizzed to say the least.

Saying all that, unless you already had your finish coat on it where it couldn’t adhere properly, your glue must be bad.
Heck, I have run glued up boards through the planer after two hours!
See below. regular pine strips glued to walnut and run through the planer to flatten the boards which were bowed and couldn’t be jointed flat.

-- Handcrafted by Mike Henderson - Channelview, Texas

View SuperCubber's profile


1025 posts in 2278 days

#5 posted 05-19-2015 12:56 AM

I can’t seem to find it now, but I remember reading a test done in one of the wood mags. According to their data, standard yellow glue (Titebond Original) achieves 90% strength in 30-60 minutes. As Mike said, there is no way it should be falling apart.

I agree that it is probably a bad batch.

-- Joe | Spartanburg, SC | "To give anything less than your best is to sacrafice the gift." - Steve Prefontaine

View dhaas's profile


6 posts in 1284 days

#6 posted 05-20-2015 02:01 AM

I would bet it’s a technique issue if the glue has not been damaged by age or storage. Not enough info. Could use some pictures.

View MrRon's profile


4758 posts in 3237 days

#7 posted 05-20-2015 09:03 PM

Were you possibly gluing end grain?

View pintodeluxe's profile


5653 posts in 2807 days

#8 posted 05-20-2015 10:59 PM

Good thought Mr. Ron. End-grain glue joints are never very strong.

Was clamping pressure sufficient?

I almost always use TBII, unless working with walnut then I use TBIII.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View BigJohn's profile


108 posts in 3909 days

#9 posted 05-22-2015 01:04 AM

Thanks for all the advice. I took the glue back to Lowes and bought more at another store. This time the joint did not come apart. Guess I got some old or bad glue.

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