Does epoxy age in the tube?

[HappyJoe]

Today I mixed some ageing epoxy glue to stick a magnet to a plastic timer. After an hour ( it has 5 minute setting time, it says) I let the magnet stick to a steel surface. A while later the clock had fallen away from the magnet! I re-did it with a bit more hardener. Two hours later the remains of the mixing still on the paper I'd used was still un-set.

Did it fail through passage of time or might it have been a bad batch or is the word "Blackspur" on the tubes relevant?

 

[big-all]

probably had it

try doubling the hardner and applying steady heat if possible as that will accelerate the hardening proccess

by heat i mean up to 80% used to use rapid areldite for moddeling[filling]plastic models apply to the area a bit proud cover wirh selotape dunk in water well off the boil and it would be fully cured twice as quick

just be aware it will be a lot more runny before it sets

 

[Bilioustrumpstaine]

Or you could invest a couple of quid in a new pack of araldite

 

[HappyJoe]

What? Spend money when I've got a perfectly good set of tubes of useless glue?? How would I justify it?

I s'pose I'll have to because I binned the stuff yesterday...

Teh extra hardener and a day 'setting' (I dare not pull at it in case it comes apart) and it is holding. Maybe it's the 5 minute part that ages the quickest.

Thanks for the responses!