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post #1 of 7 Old 01-14-2012, 12:41 AM Thread Starter
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Today I tried gluing a simple pen blank using holly and blackwood Gabon. I was gluing the small pieces end grain to end grain. I tried at first to use System 3, 5 min epoxy but I did not work the blank for about 5 hours. That came apart very easily. Then I tried CA and that too came apart too easily.

My question is what glue do you people use to glue 2 woods such as these??? I was sceptical to use TitebondII because of the exotic oily wood. I cut the pieces on a tablesaw so the cuts were sweet. Maybe they were to smooth and I should have roughed up?????? I glued them basically right away after cutting.

Any help or suggestions is appreciated.

John T.
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post #2 of 7 Old 01-14-2012, 12:49 AM
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End grain to end grain has a reputation of being a weak glue joint.

My suggestion: drill each piece first, then glue both pieces to the tube at the same time and allow the tube to provide some strength.

Don't rough the wood-to-wood faces, smooth (and square!) as possible will give the best looking seam -- i.e. almost no VGL (visible glue line)

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post #3 of 7 Old 01-14-2012, 03:31 AM
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when nothing else works,,, get a tube of PL premium,,,unbelivable what that will glue together,,indianabob
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post #4 of 7 Old 01-14-2012, 08:46 AM
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Don't know if this will work, but it may be worth a try. Before I finish oily exotics I give them a good cleaning with DNA, or even acetone. Duncuss's solution seems to be the best though.


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post #5 of 7 Old 01-14-2012, 09:26 AM
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I did a test a few years ago on end grain to end grain glueing. I used 3/4" square pieces of maple. I used yellow glue, Gorilla glue, CA glue and slow set epoxy. You would not believe how weak the joints were.
I tried it the second time and soaked some thin glue into the end grain before gluing them together. That helped but they were still incredibly weak.
In both tests the epoxy worked the best. I clamped one end in a vise and put a 5lb weight at the joint. Then I slid the weight out until the joint broke. All of them broke no more than an inch from the joint except the epoxy which only held up to about 2 or 3" if I remember correctly.
Cleaning the wood with Naptha or Alcohol is the method I hear most often. I've tried it and it seemed to work but then I didn't really run a test with and without that method to prove any difference.
I would use epoxy and then clamp the wood over it's full length for drilling. That should keep it from coming apart.
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post #6 of 7 Old 01-14-2012, 10:10 AM
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If pre- wet and pre-glue end grain with yellow glue should hold.

Epoxy and polyurethane glues little better gluing end grain. Have to wet surfaces when using poly.

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post #7 of 7 Old 01-14-2012, 09:13 PM
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when I use epoxy I always let it set over night.. maybe that would help??

If not, drill the holes separately and glue them on the tube.

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