Hi,

It is bad enough to have things go wrong when you at least can understand what the problem was/is. But not knowing why ??? makes me the most uncomfortable :-) I can't say what this is either ... just getting started using epoxy, but I wonder what was the moisture content (approx) of your yellow pine blocks just before you sealed them. You did say "rubbed in AND slathered" on the epoxy right? Are the blocks just glued on without any glass renforcement and fillets ? Are both blocks showing the same markings ?? I'll watch this thread cause it may be important .... hopefully it's nothing. Good Luck.

Arthur