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John Randazzo
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Rick, Yellow and white glues cure by the removal of the moisture in the glue, that usually won't happen in a plastic bag, so the glue will only set in the bag. I always use unibond 800 urea glue for any bent laminations because it does cure in the bag and the spring back is kept to a minumim. also the use of an electric blanket does speed up the cure time of urea glue. Hope this helps, John. : I am building a set of Padauk dining chairs that require thin strip : laminations construction for the back rests and side rails. The glue : up consist of 6 - 1/8" laminations. I've built convex forms for the : vacuum press and glued up two of the backs using a yellow Titebond : glue. The forms are about 22" long and rise about 3" in height. I : left everything in the press for approx 10 hours. When removed I got : about 3/32" springback and the glue did'nt seem to be fully cured. : My questions, being new to using vacuum for pressing, are these. : Should I be using a heat blanket to assit the curing of the glue ?. : Is it a good idea to use a heat blanked in general ?. If I was to : switch the glue to a urea glue could I expect to see less spring back : when the pieces are removed from the form ?. What is a reasonable : time to leave a glue up like this in the press using urea glue and a : heat blanket ?. Thanks for anyone that could help.
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