Some joint/glue tests

[gckless]

Here is a glue strength test done involving LaPage Carpenter's Glue, Titebond III, Gorilla Glue, Weldbond, epoxy, and hot glue:

http://woodgears.ca/joint_strength/glue.html

Couple different findings in that one, but the tester basically found that among the actual wood glues, it generally did not matter.

Here is one testing different glue joint techniques, specifically clamping:

http://woodgears.ca/joint_strength/glue_methods.html

"Gluing method Breaking forces Average

Sanded, 10 lbs clamping 160,160,150,150,135 151

Scraped, 10 lbs clamping 145,150,190 162

Sanded, clamped hard 135,150 143

Scraped, clamped hard 110,130,100 113

Gapped joints 170,180,185 178

Dry tenon, sanded 35,40,70 48

Summary:

Only applying glue to the mortise of a mortise and tenon joint is a bad idea

Excessive clamping force can weaken the joint strength by up to 20%

A very smooth scraped surface is just as good, if not better than a sanded surface, as long as not clamped excessively hard

Gaps in a joint, as long as they are filled with glue, do not aversely affect joint strength."

These aren't super in-depth, but decent info. Take it how you will.

[n8ball2013]

look at that titebond 3 came out as best overall. huh

[Karkov]

Seen this a while back. That second test (clamp) sure is interesting.

Wish they would have tested Titebond 2 in the first test...or is TB3 just stronger anyways?

Either way Thanks for posting. That clamping is interesting because I clamp things hard thinking it helps but it must squeeze the glue all out? Plus it's nice knowing that a gap with lots of glue in it is still really strong, LOL!

[audiofanaticz]

tb3 is stronger than tb2 and passes a higher standard for waterproofing, has a longer open time so it really soaks into the wood better when its drying for a stronger joint.

Test is okay I guess, but Im baffled on why he used regular gorillla glue, and not gorilla woodglue.

Elmers woodglue max would have been a key glue to also try.

They also make a hotglue for wood as well, I have some in my garage, again why this wasnt used and just normal hot glue was used is head scratching.

Id alo would of liked to see new bottles used of all glues, not glues that gotten thicker and cut down with possible water.

Im also assuming he is from a different country, and maybe one of the reasons for certain brands but not sure.

Either way, I will stick with my titebond3

[CNF Kevosinn]

tb3 is stronger than tb2 and passes a higher standard for waterproofing, has a longer open time so it really soaks into the wood better when its drying for a stronger joint.

Test is okay I guess, but Im baffled on why he used regular gorillla glue, and not gorilla woodglue.

Elmers woodglue max would have been a key glue to also try.

They also make a hotglue for wood as well, I have some in my garage, again why this wasnt used and just normal hot glue was used is head scratching.

Id alo would of liked to see new bottles used of all glues, not glues that gotten thicker and cut down with possible water.

Im also assuming he is from a different country, and maybe one of the reasons for certain brands but not sure.

Either way, I will stick with my titebond3

dude....get some more glue

[Karkov]

Ah ok, so TB3 is stronger. I knew about the water proofing. Thanks man!

TB3 for me from now on instead of 2

[poorfish88]

I just glue all my boxes TB3... No nails or screws at all.... I had the trash man say one time he wouldn't take them cause they won't break up.

Lost that fight humbly cut all boxes up now... What an idoit I was, now the fucker won't pick up my trash at all if it's sticking out. TB3 is the real deal!

[audiofanaticz]

Dude, I used almost 6 gallons of tb3 in my wall.....

I re-uped on it a few times during the build. LOL

I brad nail everything, they dont add strength 1 bit, but it keeps me from having to wait 24hours while a piece of wood is clamped and drying.

This way I can glue and clamp a side on, put some brad nails in it, start putting another side on and about a hour later remove the first set of clamps.

[rockFord_Expedition]

Dude, I used almost 6 gallons of tb3 in my wall.....

I re-uped on it a few times during the build. LOL

I brad nail everything, they dont add strength 1 bit, but it keeps me from having to wait 24hours while a piece of wood is clamped and drying.

This way I can glue and clamp a side on, put some brad nails in it, start putting another side on and about a hour later remove the first set of clamps.

x2 on the brad nails. I like that they keep your pieces lined up.

[will77530]

wheres the elmers