View Poll Results: Is a glued dovetail joint stronger than an unglued dovetail?
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wots a dovetail?
29th Jul 2006, 05:41 AM #1
Is a Glued Dovetail Joint Stronger Than An Unglued Dovetail
That's the question.
What's your opinion.
The answer is here
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29th Jul 2006, 06:07 AM #2
An interesting result. Of course, many of my dovetails are so slack that without glue the whole drawer would just fall apart.Cheers,
29th Jul 2006, 07:02 AM #3
Glued has to be stronger. pure physics.If you can do it - Do it! If you can't do it - Try it!
Do both well!
29th Jul 2006, 08:15 AM #4
This is one interesting read. I do agree with Ernknot that theoretically glue should be stronger. Does anyone have any idea why the results were what they were?Have a nice day - Cheers
29th Jul 2006, 09:00 AM #5
But what they didn't test was repeditive loads. The unglued joins failed by deformation, the pins actually slid and compressed. That indicates there was movement before the actual failure. If that was repeated the join is going to work loose. The glued join failed suddenly when the faces of the pins sheared off, there would have been no movement before the failure.
So yes I can believe their results, but they aren't a real life test. You dont hook a winch to your drawer fronts and see if you can pull them off. Instead they get pulled and pushed 20 times a day untill they possibly work loose.
SO back in the real world I suspect the glued joints will actually last longer in service.
29th Jul 2006, 09:30 AM #6
.......................Flawed experiment. A glued dovetail is definately stronger!!!
REgards Lou:eek:Just Do The Best You Can With What You HAve At The Time
29th Jul 2006, 09:59 AM #7
OK, today I'm going to build a picture frame and try unglued butt joints. That should be really strong.If at first you don't succeed, give something else a go. Life is far too short to waste time trying.
29th Jul 2006, 10:08 AM #8
How can you tell from the reference? They don't give any figures for load that the glued dovetail failed at, only that it was less for wide-angle glued dovetails. What load did narrow angled glued dovetails fail out? By inference, it was greater than the unglued ones."Clear, Ease Springs"
29th Jul 2006, 10:30 AM #9Originally Posted by Gumby
29th Jul 2006, 10:56 AM #10.
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To answer that just ask yourself if you would make someone a chest of drawers and just tap them in with no glue and then deliver it to them that way
29th Jul 2006, 11:08 AM #11
The test only applied force in a single, constant direction.
If lateral force or varied direction force was applied the results would have been diferent.Bodgy
"Is it not enough simply to be able to appreciate the beauty of the garden without it being necessary to believe that there are faeries at the bottom of it? " Douglas Adams
29th Jul 2006, 07:00 PM #12Originally Posted by echnidna
Yep, I've seen that web page too, but note the date: 1958
Since then modern glues have come a long way, and now materially bond with the timber and itself (well, for the first glue-up anyway), so I'd still stay with my vote of glued D/Ts being stronger than a purely mechanical attachment.
29th Jul 2006, 09:26 PM #13
Didnít have the patience to read the whole thing. It was written in 1958 right? Please donít tell me glue makes it weaker.Visit my website at www.myWoodwork.com.au
29th Jul 2006, 09:30 PM #14
I see there are many disbelievers on this forum
29th Jul 2006, 09:35 PM #15
The two panels in the picture are not from a matched pair, please note the last tail so this could be bs.
I like the the idea of glued dovetail joints