most biscuits are very dry, very compressed wood fibers, usually beech..
the theory is, when the moisture in the glue hits them, they expand..
I can buy into this easily, after my one attempt at gluing one side of a joint
first, as I would do with dowels.. the biscuit didn't fit in the slot on the
other piece any more..
Please remove splinters before emailing
You didn't forget the glue, did you? (kidding) But, it does sound like
there was a problem with the glue or gluing technique used. BTW,
normal biscuits ARE made from solid wood, usually beech, that is
machine compressed so that they expand after absorbing moisture from
glue or surrounding wood.
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