Just wondering what went wrong - I was cleaning up and smoothing a glue up panel and the glue joints broke open. This is a three piece panel made from 5 inch wide cherry with jointed edges prior to glue up and glued with regular yellow glue that is maybe one year old - probably has been frozen but it sure looked good. I glued this up last week and it was in the clamps for at least 72 hours - I clamped it between my vise and a bench dog and started to flatten the panel with my new Rotex sander - when I was working on the second side I saw the glue joint was opening. I removed the panel from the vice and dropped it on the floor, both joints broke open. This has never happened to me before. what went wrong?:dontknow: