NEVER buy washable PVA. I thought glue was glue, apparently not. I spent 3 weeks making half a snail character - 12 hours for the head - 8 hours for the neck etc...it didn't seem that complicated to make, it just took about an hour for the glue to dry enough so that the next tab could be glued. It was only when i peeled off some dired glue from my board that i noticed it didn't snap into little bits, but was soft, like hot melt glue. It must be due to an additive they put in the PVA to make it washable, it's absolutly useless for modelling. Don't use it. I've since bought cheaporama standard PVA, dries fast brittle, just like it should. Might get back to building when my sanity returns. Don't use washable PVA.