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Darryl Keil
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Jason,If you mix up a slow batch which will give you a longer press time the open time will be slower too. If your objective is to have a long open time the best way to achieve this is by chilling the glue in the fridge a few hours prior to mixing. Temperature will affect the open and set time much more than the mixing ratio. As long as the temperature during pressing is within specs the glues temperature before is not critical. Once the glue is spread on your substrate it will quickly come up to temperature. As long as you are within the ratio specifications your bond will be fine. I leave my ratio at 4 to 1 by volume or 10 to 1 by weight and adjust the open and set time by temperature rather than by mixing ratios. If you want to be extra fussy these ratios are the ideal but not critical. Remember, the set times listed on the bottle are for flat unstressed work, like veneer. A full cure is always overnight.SincerelyDarryl Keil: its been a while since i've used unibond glue, and i've got a : question about cure times. the specs are clear enough, but they : don't speak to different mix ratios. so if i mix up a slow batch of : glue, how does that affect the open time, since the pressing time is : now less? also, does varying the ratio of resin to catylist affect : the strength and/or properties of the final cure? (i've used too : much epoxy, so i get worried about such a big range of mixing : ratios.) thanks much.....: jason
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