Primitive Archer
Main Discussion Area => Bows => Topic started by: missilemaster on April 11, 2013, 09:57:22 pm
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Hey guys, I was just wondering if heating TB111 in an oven to cure it gives a stronger bond, or if room temp is as strong as she'll get? Thanks
Cody
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Titebond will release with heat so I believe room temperature is best.
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Yes, don't try to heat treat AFTER putting on rawhide :o
Greg
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Just go with room temperature. As a side note, I looooveeeee TBIII. It's just a little more expensive than TBII, but it's waterproof, just as easy to apply, and really strong. I used it to glue on a longbow riser and only realized after tillering that the grip was bending some. :o The titebond didn't loosen at all.
DISCLAIMER: Don't glue on bendy handles it will break yadda yadda yadda...
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You can't yadda yadda glued on bendy handles :)
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Heating it when it's drying will only speed up the drying process. No difference to strength.
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Just follow the manufacturers instructions. They put instructions on the bottle for a reason. Not because that gives you the weakest bond...
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Darksoul I usually look at the instructions after I screw something up, and am trying to figure out why it didn't work,you sound like Miss Joanie. ;) Cody I would say room temperature is good.I tried it back in the winter in my outside shop when it was cold and I can tell you don't work to well, :o the snake skins dried before the glue and made quite a mess. ;) :)
Pappy
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Glue manufacturers do VERY rigorous testing on all their products. It is part of their job to know what a certain glue does in a certain application. All glues we use, and especially proven glues like Titebond, have been tested much longer and more sophisticated than us bowyers can ever do. We need to rely on their testing instead of one random bowyer saying that what he did worked, so should be all use his method. Just because one bowyer cured a bow blank glued up with titebond3 in a hot box without the bow delaminating, doesn't mean the bond will be stronger. If the manufacturer indicates an application temperature "above 47 degrees Fahrenheit" (http://www.titebond.com/product.aspx?id=e8d40b45-0ab3-49f7-8a9c-b53970f736af) (or 8 degrees Celsius), that doesn't mean 200 F is good for the glue. Quite the contrary! Read what the manufacturer says:
BOND STRENGTH ASTM D-905 (ON HARD MAPLE)
Temperature Strength Wood Failure
Room Temperature 4,000 psi 57%
150°F Overnight 800 psi 0%
Curing the glue at 150°F overnight will DEcrease its strength tremendously by 80%!
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OK thanks everyone for the replies!
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All TB glues will release at 150deg(F). If you ever need to remove an failed backing or belly this is good to know. ;)
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That is good to know. Sure beats sanding and scraping off an old backing.