Titebond Extend glues have a half shelf life of the non
extend/regular wood glues. The extend glue is simply regular wood glue
with with large particles added to block the wood's pores. This
blocking of the wood pores extends the open glue time. Given time the
large particles will settle to the bottom of the glue bottle and the
remaining regular glue at the top of the bottle will be more like
standard glue with a shorter open time. Extend type glues should be
stirred, not shaken, every few months to prevent this separation and to
prevent the large particle from sticking to each other. As much as 5%
water can be added and stirred in to return the glue to it's normal
viscosity should the separation occur. this may or may not help.
Titebond extend glues have a shelf life of "1" year. Regular Titebond
glues have a shelf life of "2" years. Remember this is the time from
date of manufacture, not when you open it.
Titebond puts a date code on each bottle, the actual plastic bottle, not
on the label.
Here is how you read the code.
The first letter is A for made in America, the first digit after the A
is the last digit of the year of manufacture, the third and fourth
digits represent the month, the fifth and sixth digits represent the day
of the month and the last four digits represent the batch number.
A104270023 – This material was manufactured on April 27, 2011
The example that Titebond used in this example is at least 8 months past
its shelf life.
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