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Comment by Treblemaker | Hacker News Reader

"Based on reports made to the company and the Consumer Product Safety Commission, less than one tenth of one percent of the millions of Pyrex products sold each year experience thermal breakage"

So, that's potentially thousands of people experiencing this each year? Not a record I would be proud of....

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Also, how many people bother to report a broken baking dish or whatever? Figure the reality is at least 10x worse.

I had a Pyrex pan shatter. Didn’t bother reporting of course.

I also had a Pyrex bowl shatter and didn’t report.

I bought a new one and am careful about how I heat it now.

I had a Pyrex baking pan crack in the oven once. I was baking some chicken breasts that I hadn't thawed, they were still frozen solid. The pan didn't explode though, just cracked into a couple of large pieces.

I recently bought a set of pyrex containers. The temperature safety procedures are irritatingly complex. Frozen chicken in a hot oven doesn't surprise me that much, but you can't even use it to put room temperature ingredients in the oven while it's preheating.

This is my small batch, artisanal data: As an avid baker and engineer, over the last decade I've had two pieces of cast iron catastrophically fail vs one piece of borosilicate. I'm not sure if that makes metal twice as dangerous, or if people maybe report things breaking disproportionately to the manufactured volume...

I will say feeding my future father in law a glass casarole was not a strong move.

> I've had two pieces of cast iron catastrophically fail

How does cast iron fail? Was this like a cast iron pan or an enameled dutch oven?

Cheap cast has impurities causing expansion rate differences. Cast being brittle will cause that to pop. Also one of the reasons brazing cast is not straightforward

I’d just like to point out that I have and broke Pyrex, not borosilicate (as explained by the article).

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