Well, after I sandblasted and/or abraded with sandpaper, I cleaned as well as I could with Alcohol, so residue, I don't see how. But the "stock" surface finish looks to me to be almost mirror finish, I just don't see how that's a better surface to work with than roughed up.
Isn't the whole...
My epoxy saga just gets stranger by the week. I'm doing some testing on how best to epoxy AL to 301 1/2 hard SST. I've found an epoxy that works almost OK. I've been trying to find a reliabe method for preparing the surface to maximize the surface bond strength. It appears that, if I rough up...
Well, here's the thing, the epoxies I've tried, all of them, the failure comes from the epoxy coming off of the STAINLESS STEEL.
This is an indoor application, no temperature swings.
I would have never thought in a million years it would be this hard to epoxy SST to Al...
I am trying to affix 301 SST to 6061-T6 Aluminum. The surface area is 1 SQinch. I prep both surfaces by sandblasting and then I clean with acetone. I apply the products to the letter of the law, I let it...
I'm trying to glue SST and AL together for a product I'm going to be introducing to the market place soon. You know the drill it's gotta be cheap and quick for assembly.
HOWEVER, it turns out that when I made that post, the epoxy was about 4 hours into its curing, the bond was excellent. The...
And the winner is...
After numerous tries to get AL to stick to itself via an epoxy, my last ditch effort using Loctite (free plug!) metal/concrete epoxy has done the trick as I hoped. It will also bond SST and AL like crazy.
So thanks for all the input and opinions, and I hope this helps...
Update...
Just talked to Devcon's technical people. They didn't think any surface prep is needed, sand blast, a good alcohol wipe and maintain a .01-.02 bond thickness, which I was not doing.
Good Q. So far the only name brand has been the Super Glue Gel by Loctite. Everything else was whatever you get at the Home Depot-sorry I don't have the brand names handy.
But it's clear something else has to happen to get a good bond. Sand blasting, cleaning with soap and water then alcohol...
It's a flat surface to flat surface, about 2.5 in^2. I'm evaluating the strength super simply, I can pull the pieces apart by hand, which to me is a very weak bond for an epoxy. I'm trying a different brand of epoxy now, and should know by tomorrow evening if it's any better.
Sigh...
This is nuts... The sand blasting did help I'm still not getting a super strong connection though.
It's an indoor application, and I'm developing a product for a client. It could be welded but I'm looking for quick and easy, not to mention the welding would bend a key piece that has to be...
I have access to a sand blaster, so I'll try that on them.. Rght now I'm cleaning them with alcohol first and then good ole soap an water, and then drying of course.
Ok,
You'd think this wouldn't be too difficult but I'm trying to epoxy two pieces of AL together. I am cleaning the surfaces thoroughly, and applying the epoxy as directed. The bond just isn't as strong as you'd think it should be. It's a tight fit situation so I'm condidering rivets if I can't...
Hey fellas,
I want to use a 1/16" thick x 1.5" wide strip of 6061-T6 AL as a "C" spring (about 3"in dia). Currently I am simply wrapping it around a peice of bar to achieve what I need, and it works fine for my purposes. But is there any way to heat treat this to where this spring will be more...
