I still have some Armstrong epoxy glue, but I'm nearly out.

[bloke]

Once I run out, what brand name have you found that works well?

...or have you found that most any 24-hour-drying off-the-shelf works fine as long as it's mixed properly and it applied to clean surfaces...??

... or maybe you've found that an automotive brand is really good, such as JB Weld brand epoxy...??

(My next instrument is the worst of four King fiberglass sousaphones, and I have to do some structural stuff on this 60-year-old one first... (Some young scholars decided to pull the threaded flanges out of the fiberglass on the second branch.)

[MikeS]

I have been using West System epoxy for decades, in all kinds of applications. It was developed by a couple of brothers who started out working for Dow Chemical and decided they would rather build boats. They have a wide variety of fillers and additives so you can tailor the consistency and physical properties to the job at hand. Good stuff (at least I think so).

https://www.westsystem.com/

[bloke]

Thank-you.

Whether expensive or cheap, if well-kept, epoxy doesn't get used up particularly quickly, so "excellent" is always preferred over "adequate".

[the elephant]

I'm not familiar with Armstrong. It is liquid or putty?

I found something with that name for sale online, but it appears to me that they make many different epoxy formulas. Which one do you use?

https://exdron.com/product/resinlab-arm ... ml-mixpac/

[bloke]

I'm not familiar with Armstrong. It is liquid or putty?

I found something with that name for sale online, but it appears to me that they make many different epoxy formulas. Which one do you use?

https://exdron.com/product/resinlab-arm ... ml-mixpac/

What I've been buying was small amounts that Allied Supply put in little glass jars. (2 part)

[catgrowlB]

This past August/September I did some epoxy touch up on my Selmer Signet. I think it is the clear 2-part epoxy from Gorilla Glue. I mixed it well and added some cotton (from a q-tip) to give it even more strength. After completely cured, I then filed/sanded it, then painted it and it has been great.
You can add a little fabric or cotton into the epoxy mix while still wet to make it a little more robust. Think rebar in concrete.

I've used the JB Weld putty and their colored epoxies. I find they fail adhesion after a while. The clear 2-part epoxies when mixed well, and let completely cured on clean/dry surfaces always work better for me.

I sort of enjoy doing epoxy work (except the smell) about like I do soldering. It's satisfying

[bloke]

The cotton fibers make it sort of like that product that comes in a gallon can called Kitty Hair, then...

[bloke]

Mrs bloke brought home some of the Gorilla epoxy that one of you recommended. Thank you.

I think I'm going to make another one of those flanges today that I displayed in the king fiberglass sousaphone thread and see if I can get both of them first stage glued into place...

(... with subsequent stages being for pop rivets on each one, epoxy impregnated fiberglass cloth over each flange, Bondo over the fiberglass cloth, and then sanding).