If you really need to unglue it as opposed to ripping, try some alcohol,
assuming it is hide glue. You want the dry or anhydrous alcohol, not
rubbing alcohol which has about 30% water. The alcohol will denature the
proteins that comprise hide glue making them crystallize. The joint will
just let go. You may have to tap it. The residual glue will not be a
sticky goo but rather a solid hard mass. Vinegar can remove the mass along
with a stiff brush.

Good Luck.

"ToolMiser" wrote in message
...
I have an older 3 drawer cabinet that has a split part way through the top
at
the glue line. What is the best way to release the rest of that joint so
I can
clean it out and reglue it. I suspect it was done with hide glue. Most
of the
rest of the joints in the piece will need to be reglued because they are
dried
out, and have came apart.

Thanks!