aluminum glue ,which one is better 3m 8116 vs lord 406/19? where to buy?

[aluminumwelder]

I've ordered some samples of each, which one is better 3m 8116 vs lord 406/19?

my application is for gluing telescoping pipes together

we have been welding the pipe, and the welds dont' look great, even if we invested in a rotating weld positioner, I think gluing would be faster and cheaper since our product has very very low structural requriements, basically we are making a trade show booth and the pipe just needs to hold a curtain up.

krayden.com vs elsworthadhesives.com?

thanks in advance

 

[Stanton]

What is the gap you need to fill between the I.D. of the larger
and the O.D. of the smaller?

Why not buy a 20' stick to begin with?

Why do I think this going to wind up being more than a glue question.

 

[aluminumwelder]

we are gluing a thicker wall pipe to a thinner wall tube with a slip in piece connector between
one side has a clearance of zero and the other clearance of 1/32
we can overlap as much as needed but i was planning on 0.75"on each end of tube

 

[ggsigns]

Zero clearance is no good, you need room for the adhesive. The 1/32" is probably a bit tight but workable. With any adhesive the strength of the joint is a function of bond area. The more area bonded the stronger the joint. I would increase the overlap to get a bigger joint.

 

[J Hill Designs]

never tried the 3m, but 406/19 is killer stuff

+1 to 'test em both'

 

[letterman7]

While I question why you need to solidly join telescoping pipe, I have to agree with Stanton. Why not simply use a solid piece? If you need them to telescope, as many trade show booths need, why not drill a series of holes to place a through-pin into and make it truly portable?

 

[aluminumwelder]

we make this

this is what we make and it is probably 60 pounds using the thinnest 16 gauge tubing, however the thin tube is not durable where it connects so we need to use thick wall pipe where the sections connect together, thus my need to weld or glue heavy duty pipe onto light gauge tube. Yes we could make the whole thing twice the weight by using PIPE, but then it would not be easy to transport.. we have made several of these and we are constantly trying to make it stronger and lighter and easiser to use.

i guess i will just test myself since no one seems to have actual experience with the two epoxies.

 

[FS-Keith]

lord is better in my experience. its what we use all the time right now. You better change your screen name now... Have you thought about drilling holes in the outside pipe and doing plug welds?

 

[letterman7]

Ok.. having to agree with FS above about the screen name. A good TIG welder would do you wonders. But as for the adhesive, my go-to is 3M's 8115 panel bond for the automotive industry. Nice set time and once dry very little will break the bond.

 

[Stanton]

we are gluing a thicker wall pipe to a thinner wall tube...

Pipe and tube are defined terms. It is a diameter thing. Not a wall thickness thing.
I would think an "Aluminum Welder" should know that.

Take a few moments and think about what you want to learn from us experts.

Ask a questions that will elicit a useful response.

Someone above said plug weld.
My first thought also... Electric Glue.

Now you want a slip joint.

3/4" overlap (top hat cap) = joint failure.

[how do you manage slop further down the TUBE ?]

Provide a sketch. Provide details. Provide something.


I am retired. I live to help.

-Glenn

 

[Stanton]

...why not drill a series of holes to place a through-pin into and make it truly portable?

Yep... tent tube.

There is so much more to this story than has been divulged.

 

[aluminumwelder]

wtf

no there is nothing more to this story at all
it is very simple..... if you've compared various ways to glue aluminum together let me know
if you haven't than thanks for reading and trying to help.
if you have never used any type of glue on aluminum, than you probably can't help me out.

There are too many glues out there for me to try them all. i've already spent hours researching it on line and just looking for some school of hard knocks EXPERIENCE! thanks.

 

[FS-Keith]

glue is not the best for your application it seams. brush up on your welding skills to make your work passable or do some plug welds or drill through both tubes and pin it

 

[aluminumwelder]

The 3m stuff worked fine. Thanks to those that offered help.
When i get the lords in i will try to post comparison.
I'm surprised no one else seems to have done this.

 

[player]

I am curious why the plug welding suggestion would not be suitable?

 

[aluminumwelder]

because it's more expensive.

because it is more expensive and takes longer to do.

 

[FS-Keith]

because it is more expensive and takes longer to do.

drill hole, weld 3" wire out of your spool gun, smooth out with 3m scotchbrite wheel is slower and more expensive then using glue and waiting for it to dry? wasting tips

 

[aluminumwelder]

are you serious, you think I actually sit there and wait for glue to dry?
do you watch your water till it boils?!?!

it takes about 30 seconds to put some glue on and pop it in and then it is done. the next day when it is dry i put it in a box for customer.

it takes a heck of a lot more time to weld it and you know it. plus if my welder is busy i can teach anyone how to do this at a lower wage.

do you guys actually run a business that looks at labor costs, or do you just do this on the side for fun. wasted tips indeed.

 

[FS-Keith]

You left so many details out we had to make assumptions, so you are not painting or doing any finishing on the tube? or is it prefinished? with that little gap I would think you would have glue that squeezes out that needs to be cleaned up.

drilling and tapping a 10-24 or 1/4" stainless screw or even drilling and riveting a couple stainless rivets in the application seems like it would hold better then glue in the event of any shock to stress of the tubing for this application. I guess just prefer mechanical fasteners whenever possible especially when Something for this application would be fairly easy to conceal

And yes we all just do this on the side and dont make any profit from it. Just remember you are the one asking these silly questions Mr "aluminumwelder" If you dont know where to buy the glues that us sign industry people use everyday then who is the bumpkin in their garage now

 

[aluminumwelder]

i've already bought the glues and like others i'm always open to new vendors with better pricing. apparently there aren't any companys wiht better pricing than ellsworth.