"Gary" wrote in message ...

Ophelia wrote:
>
> "Julie Bove" wrote:
> But in thinking about Steve and his accident, it's a wonder this didn't
> happen in the microwave! That's a scary thought!
>
> ====
>
> Oh my!!! You have put me off Pyrex for good. I don't have a lot and
> have been using it for decades but ...

No worries about using old or new pyrex, just treat them
properly.
With old ones, they have been used for years and maybe even some
scratches so not quite as durable as brand new.

In Steve's case, he put his right into an instantly hot microwave
from the refrigerator with no warming up a bit time. I don't know
about all microwaves but most don't actually heat with half power
when using the thaw setting. They run at full power for so many
seconds, then turn off for so many seconds. They rotate from on
to off even though the turntable is still turning. To try to go
from very cold to very hot in a minute or two is stressful for
any glass product.

Ahh yes! I would never that. Too much stress!!!

Anyone that ever took a chemistry class in school first learned
to "temper" their glassware (test tubes, beakers, Erlenmeyer
flasks, etc) by passing it over the bunsen burner a few times
before setting it in a rack right over the constant flame.

In Julie's cases (2 of them), both times, she washed then set
them both where one fell on the floor and the other fell into her
sink. That's not Pyrex fault, that's just Julie not putting them
somewhere properly.