Are pocket screws stronger than dowels? Are wide tenons stronger than narrower ones? Are deeper dadoes stronger than shallow ones? For the “Wood Joint Torture Test” in WOOD magazine issue #173, we created and then destroyed more than 100 joints in our quest for the answers to those questions and more. This video shows some of the joints we broke.
Duration : 0:7:5
Tags: joinery, joint, magazine, test, wood, woodworking
February 6th, 2009 at 4:50 pm
what would be shear …
what would be shear? pressing a downward force directly at the joint, rather that 6 or 8 inches away like in the movie?
February 6th, 2009 at 4:50 pm
Dovetails are …
Dovetails are stronger due to the inherent mechanical strength of the dovetail. By this method of joinery, dovetailing will last as long as the wood that its made of whereas a glued up biscuit joint will be subject to wood movement slowly breaking down the joint and ultimately the joint will fail.
February 6th, 2009 at 4:50 pm
I’m building a …
I’m building a kind of trunk. What would be stronger just using screws with a butt joint or a box joint? anyone got any ideas????
February 6th, 2009 at 4:50 pm
interesting
interesting
February 6th, 2009 at 4:50 pm
the shear test is …
the shear test is not in shear
February 6th, 2009 at 4:50 pm
It sure is but hide …
It sure is but hide glue used for centuries is just as good if used correctly as evidenced by 200 yr old furniture, much of it never used glue for anything other than a secondary attachment.
February 6th, 2009 at 4:50 pm
Wow, only stress …
Wow, only stress tests I’ve ever done with wood is with a unit in use under normal wear and tear - in the AF we used to do stress and crack testing on equipment but that was to insure a fighter didnt fall on someone’s house. Boeing’s wing test recently on a carbon fiber wing is just as awesome to watch especially at the failure point - BOOM.
February 6th, 2009 at 4:50 pm
It’s actually glue …
It’s actually glue made for attaching gorillas to other gorillas. But they should stop doing it anyway.
February 6th, 2009 at 4:50 pm
Are biscuit joints …
Are biscuit joints stronger than dovetails?
Would like some expert advice on this, thanks.
February 6th, 2009 at 4:50 pm
goog video. My son …
goog video. My son and I have quite a few projects we’re going to work on in the future, this helps. thanks for sharing the information…
February 6th, 2009 at 4:50 pm
people should stop …
people should stop making glue from Gorillas.
February 6th, 2009 at 4:50 pm
Yeah.. Kind of my …
Yeah.. Kind of my thoughts too. I got some heavy, heavy books, but I supprot my shelves at both ends. Yeeehahhhh!
February 6th, 2009 at 4:50 pm
*runs out to buy …
*runs out to buy some of them super dowels*
February 6th, 2009 at 4:50 pm
For Woodworking …
For Woodworking it’s Great Info. If I build a Cabinet, I doubt that much Stress would ever be Encountered, unless a Gorilla was inside, trying to get out !!!
February 6th, 2009 at 4:50 pm
it really does not …
it really does not matter what type of glue was used. Every joint, except the miter (with glue only)failed because of the wood and not the glue… did you not see the same video that I saw Sherlock?
February 6th, 2009 at 4:50 pm
i havent read all …
i havent read all the comments below and im sorry if i am repeating.
however i am a bit unsure about your methods, in regards to the shear test mainly. what i mean is it didnt look to me like the metal plate was placed with the same amount of leverage on the horizontal piece in the tests shown in your video.
thank you for your video i did find it quite interesting.
February 6th, 2009 at 4:50 pm
I wonder what kind …
I wonder what kind of glue was used. I would be interested in a test with Gorilla Glue, that stuff is insanely strong.
February 6th, 2009 at 4:50 pm
Howdy
I enjoy …
Howdy
I enjoy watching videos on wood tests. I sometimes use different types of wood joints in the handcrafted items that I build.
February 6th, 2009 at 4:50 pm
And yes we all know …
And yes we all know to get a truly reliable data set you’d need several of each joint tested to construct a sample populous. You’re not impressing anyone.
February 6th, 2009 at 4:50 pm
It’s a commericial …
It’s a commericial for the magazine not a lab report! What don’t you understand about that? If you had ever seen a full report on materials testing you’d know this video is a few hours too short to fully encompass all the joints tested, the procedure, equipment used, accuracy verification, their construction/preparation, blah blah blah etc.
February 6th, 2009 at 4:50 pm
Great video. As a …
Great video. As a hobbiest woodworker and a structural engineer who deals mainly in steel and concrete, these results provided inspiration to find ways to incorporate more sustainable materials in my designs.
February 6th, 2009 at 4:50 pm
I am really stunned …
I am really stunned that the joints would hold so much, it seems to me typically when a joint fails it is not from excessive weight but rather from a back n forth movement which seems to break down the bond, such as the joints in a chair.
February 6th, 2009 at 4:50 pm
With respect when …
With respect when an organisation like yourselves posts a video on utube it would not cost much more to explain the validation process providing your results this would surly increase your profile and the credibility of your results. I have not seen your mag for sale in the UK do you have a copy I can view on line?
February 6th, 2009 at 4:50 pm
I agree, Frog. …
I agree, Frog. Perhaps you should take a look at the complete results in the magazine before passing judgement. I think you’ll find our methods valid and our results reliable.
February 6th, 2009 at 4:50 pm
people who purchase …
people who purchase you magazine should be supplied with accurate data.