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post #1 of 14 (permalink) Old 05-22-2014, 05:17 PM Thread Starter
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Default For those skeptics among us.

For those of us who sometimes don't believe what we already know, and for those who just don't know. Take a look.

Strength of Glue Joints - WoodWorkers Guild of America

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post #2 of 14 (permalink) Old 05-22-2014, 08:17 PM
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Last I knew all modern wood glues are rated at a holding power of something like 2500 lbs per square inch. Which is way stronger than the wood. When I make things like saw sleds, router tables, and so on, I only use glue, no metal - because I reclaim the wood in these when I'm through with them, and often run the remnants thru my planer, and do NOT want any missed screws or nails nicking my blades.

And when I do take them apart, to recycle what I can, I have to beat them brutally with a sledge hammer, with the handle shortened to about a foot. And, believe me, it definitely takes more than one or two slams with it. My glue of preference is Titebond II, but as far as I am aware, any of the wood glues are stronger than the wood.

That's gluing following directions - if the wood is glued and the heat is too low, that makes for a very weak joint, very. I often like to add glue blocks or strips, usually about 1/2" X 1/2", which gives me a bit feel good.

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post #3 of 14 (permalink) Old 05-22-2014, 08:18 PM
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Yes Dick.

I notice there were some comments about use of biscuits on the post.

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post #4 of 14 (permalink) Old 05-22-2014, 08:30 PM
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Originally Posted by jw2170 View Post
Yes Dick.

I notice there were some comments about use of biscuits on the post.
Never used bisquits, and doubt I ever will. However have used dowels upon occasion, and probably will again in a planned project. But I use them for holding two pieces in place, while the glue sets, rather than for added strength; also they will be used in my planned project more for decoration than anything else.

"It ain't what you're told, it's what you know." - Granny Weatherwax
Fawkahwe tribal police SWAT Team
Some days, the supply of available curse words is insufficient to meet my demands.
.....Call me a craftsman, artisan, or artistic, and I will accept that. Call me an artist and you will likely get a quite rude comment in return. I am not a @#$%ing artist.
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post #5 of 14 (permalink) Old 05-23-2014, 12:28 AM Thread Starter
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Yes Dick.

I notice there were some comments about use of biscuits on the post.
James there were some questions as to whether biscuit joints or dowel joints are stronger than just edge joining. The truth is they are not. There is a page on just joining I received in my email this morning. I consider it well worth reading for anyone new or old to the craft. There are some neat tricks I had not even considered. It is also from 'Woodworkers Guild of America'. Some of you may want to sign up for these free emails and tips.

Gluing Up Panels - WoodWorkers Guild of America

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post #6 of 14 (permalink) Old 05-23-2014, 12:47 AM
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Hi Dick, I am 100% with you on that.

I was just commenting on how often comment is made, as if a joint without biscuits will be much weaker that a joint with.....

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post #7 of 14 (permalink) Old 05-23-2014, 01:01 AM
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I use weldbond and same scenario . Tough as nails that stuff and it's easy to remove off your hands . Takes a day to set though
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post #8 of 14 (permalink) Old 05-23-2014, 01:50 AM Thread Starter
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Rick I use Titebond II and have for years, it is also easy to get off your hands. It actuslly sets in about 20 min. down here in this west Texas heat. Of course it takes a little longer to fully cure. We just bought a 1 gallon jug on sale at Lowe's. When I first started out working with wood (60+ years ago) we used powdered hide glue. We mixed up a fresh batch every morning for the whole shop class to use during the day.

I do have a 30+ year old Porter Cable biscuit joiner and have used it a lot. But the use is just for critical alignment.

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post #9 of 14 (permalink) Old 05-23-2014, 09:44 AM
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Like Rick I use and recommend Canadian made Weldbond. As for biscuits, I use them to assure perfect alignment rather than for added strength.
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post #10 of 14 (permalink) Old 05-23-2014, 10:46 AM
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As a note, be careful signing up for anything with Woodworkers Guild of America. They will send you a DVD, then send multiple letters asking for payment or return of the DVD, which in the U.S. is not legal.

-Mike
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