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