Recently I have become a fan of hot hide glue. Making my own boxes got me started using hide glue and the more I have used it the more I want to use it. In my work on pianos I find that I have need of a lot of different kinds of glues and each one has its place, but more and more I find I'm opting for hide glue when I'm doing guitar work. Here is a link to Woodcraft and hide glues. http://www.woodcraft.com/search2/search.aspx?query=hide%20glue
I'm using the 315 gram strength which has a little shorter open time but that can be extended a bit by the addition of urea or simply adding a little of the liquid hide glue which has urea already in it.
Hide glue needs to be heated to about 150 degrees F and you really need some kind of a glue pot. A glue pot will cost about $125, but I bought a 1 quart crock pot for $14 and it has a temperature control on it and it works perfect. The thing about granular hide glue is that when you mix up a batch it goes bad in about a week or so if left out, so only mix what you are gong to use. It does store very well in the freezer and a great way to store it is in a plastic ice tray. Just pop out a cube or two when you get ready to do some gluing.
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Thanks Dave. I spent a while looking at the mandolins being built. Really nice, but I thought the tinted lacquers hid the beauty of the contrasting woods. Just a personal thing and not a criticism, I always thought guitars look their absolute best before the lacquer is on.
I went back into the guitar section. He is using a water bath for the hot hide glue and he has a few nuts or bolts n the bowl to hold heat when he takes it out of the bath to use. I knew there was something in there.
http://www.proulxguitars.com/construction.htm
Dave