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Author Topic: TB3 Turned Black  (Read 1763 times)

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Offline Eric Krewson

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TB3 Turned Black
« on: August 07, 2015, 09:29:47 am »
I found out something about Unibond glue the other day, It will set up hard as a rock in the can under the right conditions. I could leave Urac on my work bench for a year in the summer heat and it would always stay liquid. 6 months did in my unibond even though I moved it to the frig the last time is used it.

I had billets to splice and only had a bottle of TB3 so I proceeded. I was surprised to see the glue squeezed out of the joint turn black from the osage oils it was in contact with. Looks like my glued on handle will have a dark glue joint that won't be all that attractive.

My first time using TB3 on osage, is this discoloration normal.
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Offline PEARL DRUMS

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Re: TB3 Turned Black
« Reply #1 on: August 07, 2015, 09:47:00 am »
Never heard of it or seen it Eric. I did make up a concoction of osage dust and TB3 to patch a splitting wedge tear out. It turned booger green, but only after stirring it and using a lot of fine dust. 
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Offline DavidV

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Re: TB3 Turned Black
« Reply #2 on: August 07, 2015, 09:50:21 am »
I've had TB3 turn black on sugar maple too, I have no idea why it happened.
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Offline Pat B

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Re: TB3 Turned Black
« Reply #3 on: August 07, 2015, 09:52:25 am »
I never heard of or seen it happen either and I've used TBIII on osage quite a bit
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Offline bowmo

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Re: TB3 Turned Black
« Reply #4 on: August 07, 2015, 10:27:52 am »
Not sure about the Tite Bond, but epoxies that have gone hard can simply be placed in hot water still in the can and will turn runny again.
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Offline JoJoDapyro

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Re: TB3 Turned Black
« Reply #5 on: August 07, 2015, 10:54:51 am »
I had it happen to TBII on oak and mahogany.
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If you always do what you always did you'll always get what you always got.
27 inch draw, right handed. Bow building and Knapping.
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