> It has been my understanding all these years that the deterioration > of protein glue is due to the increasing amount of bacteria that, > with sufficient time at the right temperature, will grow in the > glue. > > It has been my practise to mix a fresh batch of glue for each > .....so I must wonder if the glue > strength really does decrease with heat time. I leave the gluepot on from > start to finish, and the time between the first and last use of the glue ^^^^^^^^^^^^^^^ Is the glue to open air? That may be the source of the problem. But 3 days at heat is too long. However I have a bottle of glue I mixed up six months ago and have used many times since, but only heated while I am actually using it. It is still in perfect condition. I have used it for gluing bottom braces recently and had no problem. It's the total accumulated time at high temp that seems to weakens the stuff, esp. in open air condition. 3 days is enough to cook it to death, like an overdone steak. If you keep it in the fridge it will not spoil. Stephen Birkett (Fortepianos) Authentic Reproductions of 18th and 19th Century Pianos Waterloo, Ontario, Canada tel: 519-885-2228 fax: 519-763-4686 rarely exceeds three days. > Is this out of the ordinary? How do we all use hot hide glue? > And I must agree with S. Birkett, the Franklin liquid hide glue has > nothing going for it when compared to the real thing, though I have seen it > used HOT with better results than straight out of the bottle. > > Regards to all, > Ed Foote > Precision Piano Works > Nashville, Tn. >
This PTG archive page provided courtesy of Moy Piano Service, LLC