I learned about this a long time ago, to many years ago to mention. (I hate remembering how old I am) I have broken coffee pots on numerous occasions by making a new pot and not letting it cool down enough.

I guess I need to make that other video pretty quick... less

LOL! That is kind of what happened for me. I didn't use cold water, it was actually steaming hot water to soak the dish in (I rinse my dishes off with super hot water because I don't have a sprayer in the sink of my ghetto apartment, lol).

Luckily it all stayed in the sink and there were mostly clean breaks, but there is glass in my garbage disposal now and I have to wait for maintenance to come clean it out, which could take forever.

I will probably hesitate to use my other pyrex pan, just for the sake of keeping it around a little bit longer! less

Pyrex used to be borosilicate glass, which is extremely resistant to temperature changes and breaks in a controlled manner. It's what's used in laboratory glassware, the kind that you can melt, bend, and use without having to anneal.

It seems that a few years ago Corning sold Pyrex or was bought, and now it's no longer borosilicate, and I suspect it isn't even really tempered. I had one go in the kitchen and it did the non-tempered shards rather then the tempered glass chunks. I haven't really trusted it since unless I know it's the old, tempered borosilicate stuff. less