On Sun, 19 Feb 2017 16:18:36 -0600, Frnak McKenney
wrote:

On Thu, 2 Feb 2017 12:11:31 -0800 (PST), wrote:
On Thursday, February 2, 2017 at 2:55:59 PM UTC-5, Jon Elson wrote:
wrote:


Has anyone here ever seen this problem? My cousing said it might be
related to washing the knives in a dishwasher, but only about a
quarter of the knives seem to be affected.

Classic problem with 2-part knives. We have a bunch of them that are
doing the same. There is a cavity in the handle that builds up steam
pressure in the dry cycle of the dishwasher. Yes, I'm guessing if
you heat them and press the blade back in, it will do the job. These
things are so old, I doubt they used epoxy, more liekly some older
form of glue.

Jon

Epoxies came into widespread commercial use around 1950. If it's
really old, more likely it's phenolic.

None of those thermosets can reliably be released with heat. It
depends on the specific chemistry and the percentage of solids; If
they're 100% solids, it's unlikely you can release them with heat.

I have some of those knives, which have been in the family since 1963.
None of them have ever seen the inside of a dishwasher. They're really
not up to it. Neither is anything else that contains a lot of silver.

Ed, Jon,

Thanks for the comments. Will pass them along.


Frank
--
Scientists are people of very dissimilar temperaments doing different
things in very different ways. Among scientists are collectors,
classifiers and compulsive tidiers-up; many are detectives by
temperament and many are explorers; some are artists and others
artisans. There are poet-scientists and philosopher-scientists and
even a few mystics. ... and most people who are in fact scientists
could easily have been something else instead.

-- Peter Medawar, "Hypothesis and Imagination"

Check this site out if you need a high temperature cement.
http://www.sauereisen.com/ceramic-as...product-index/