The glue crystals I sell are far superior to the old type that most rebuilders are accustom to using. I never weigh the glue or the water. Whatever size container I'm using, I put in an amount of crystals, then add enough hot water to cover the crystals, and then I add another 20% water by eye. In other words, if the total depth of the glue and water in the container is two inches, I'll add another ½" of water. (Total depth [100%] = 2-1/2". So, 20% is 1/2")
Then I start cooking the glue. It normally takes 20-30 minutes for all the crystals to dissolve. Once they are dissolved and the glue is at 145 degrees, it's ready to use.. The longer the glue cooks, the weaker it gets. I generally prepare the glue in small 8 oz. squeeze bottles. This allows me to squeeze the glue directly onto the wood in whatever size bead I feel is necessary, and it prevents the water from evaporating -which causes the glue to get thicker over time.
As always, the rule of thumb is, "Test, test, test". So before you actually start working on a project, test the bond of the glue on scraps of wood and cloth until you find the combination that gives you a quick set-up time and a great seal. Remember, regardless of how thin or thick you make the glue initially, you can always add a little more water or glue crystals to get it just right.
For detailed information about this glue, see:
Written by John A Tuttle