Epoxy for metals

Dec 13, 2015 26 Replies

This is my first experience with one that does! In fact, first experience with anything that comes in a toothpaste-like tube leaking out AFTER the cap has been firmly screwed on!

Medications, artist paints, other adhesives, toothpaste, etc. have always "behaved". I've seen folks "squeeze too hard" or "in the middle of the tube" and get more than they bargained for -- and neglected to clean off the excess before replacing the cap. But, if there wasn't anything actively oozing out of the tube when the cap was replaced, I've never come back to find it having oozed "through" (around) the cap!

The dual-plunger (syringe) behave similarly; if you exert too much pressure (for the viscosity of the contents), then the stuff oozes long after you've "stopped pushing" -- as if the stuff is currently compressed inside the tubes from your pressure and is now looking to release that pent up energy.

The concrete adhesive that I use is a "two chamber", plunger-driven sort of storage/dispense mechanism. The "nozzle" through which the adhesive is dispensed is very long and contains a sort of screw-like chamber that forces the two-parts to commingle *in* the nozzle before exiting onto your workpiece. Of course, this makes the nozzle a single-use item; PLAN AHEad!

The tubes of the syringe are 2+ inches long and half an inch in diameter. You're expecting something AT THE TIP (which is the only place where the contents of each are "exposed" to any "contaminants") to travel back up through the dispensing nozzle and all of the "raw material"? I could understand the portion of the material that had already "left" it's nominal storage are in the tube(s) to begin the trip "out".

But, that would be easily purged by "wasting" some "spoiled" material with the expectation that there would be virgin material waiting "behind it". This nearly full ("almost unopened") unit was shot through and through!

I have another unopened one that I will be watching carefully to see if this is just a brand that I need to avoid in the future (it has proven to be very good, otherwise)

Yes, that's what I don't like about the long nozzle. Single use and a bunch of the material is wasted, inside the nozzle and no way to get it out. Plus i know I can mix it well. I put it on a glossy piece of cardboard, like the box from frozen food, or even from Ritz crackers, and I stir it up with a kitchen match. It's true, if you don't stir it enough it won't harden right, but I can stir it as well as the long nozzle can. (which I have doubts about.)

snipped-for-privacy@aol.com posted for all of us...

+1 on that. I used GG on an unstressed piece of wood and after about a year it failed. Reg carpenters glue never did.

I keep my epoxies and Gorilla Glue in the door rack of our kitchen's freezer compartment. It takes very little time to warm them up enough to use them. I've had a pair of tubes of electrically conductive epoxy (expensive stuff that) in there for at least ten years and it's "good as new" when I need to use a little bit.

Jeff

I keep the syringes of solder paste in the door rack of the refrigerator.

It's fairly cheap. Just buy another unit. (had a pair of tubes for several years now)

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