Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst adhesive available

I bought this product to glue up a bent lamination of hard maple. Beginning with a test gluing phase, I mixed one batch by volume and after letting the glue cure for 24 hours the glue up delaminated with ease. I then made another mixture by weight and came up with the same results. DAP products are consistently inferior and after my troubles with their plastic resin glue I'm sure I will no longer purchase any of their products again. What did work in place of this brand was unibond 800.