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I was wondering if anyone knows or has done any tests with tightbond that froze. I know the container says keep from freezing, but I also had some other glue a few years ago that said do not freeze more than 5 times. I have a bunch of glue that froze once as the battery in the thermostat packed it in over Christmas holidays.
Why don't you test your glue. Make some samples of what you typically use the glue for and controls with fresh glue. Do some destructive testing and evaluate the results.
How much glue are we talking about? 50 gallons? Did it freeze in transport or for a week. If we are talking about a gallon of glue I would pitch it. If one door or cabinet fails because of the glue you will have lost much more money that it is worth and disappointed a customer.
Hey Scott. Does it look normal? A common problem with water based items is they separate. You could poss re-blend but may not work well. I like the test idea. If it works well, you could still choose to only reserve it for less critical items such as construction vs fine woodworking. It may have denatured or damaged proteins for bond. I had great experience contacting tite-bond. They may already know the concerns about freezing. They may tell you the risk. I like the products. Many more products than the consumer stuff. I have used several types of glue and had worn out the caps. They would no longer seal and protect the glue from drying. The company sent me a dozen or so new caps of the app. color for types 1,2 and 3. I buy the gallons and refill my smaller containers. If they will do that, they may give you the true opinion of the frozen product, and not just repeat the concern stated on the label to protect them from liability. Good luck!
Based on a memory from a long long time ago. The excess glue wiped across the boards dried milky white.
If its gotten kinda of clumpy I would not use it. Old pva is good for things like sealing masonary before bonding, barrier coats on damaged walls, and my personal favorite sealing asbestos before getting rid of it. Dilute it 1:10 with water and spray it out of the cheapest pesticide sprayer you can find.
Destructive testing would be 1x4 maple edge grain to end grain butt joint. Like you would trim a window. Glue it up, let it cure overnight. Clamp one side to a workbench and hit it with a hammer. It should shear the side grain of the wood next to the glue joint. The joint itself should survive.
I would not trust TB2 thru 1 know freeze cycle. I've personally seen it fail. Other guys on Woodweb have seen it as well. The TB1 is not as susceptible. I have no idea about TB3.