The Conservative Cave

Interests => Around the House & In the Garage => Product & Merchant Reviews => Topic started by: Chris_ on May 13, 2011, 09:54:05 AM

Title: They don't make Pyrex like they used to
Post by: Chris_ on May 13, 2011, 09:54:05 AM: Quote
Pyrex, which originally was always borosilicate glass, adds boron to the silica (quartz), the main ingredient in all glass. Boron changes the atomic structure of glass so it stays roughly the same size regardless of its temperature. Little thermal expansion means little stress. Thus borosilicate glass withstands heat not because itâ€™s stronger, but because it doesnâ€™t need to be stronger.

When World Kitchen took over the Pyrex brand, it started making more products out of prestressed soda-lime glass instead of borosilicate. With pre-stressed, or tempered, glass, the surface is under compression from forces inside the glass. It is stronger than borosilicate glass, but when itâ€™s heated, it still expands as much as ordinary glass does. It doesnâ€™t shatter immediately, because the expansion first acts only to release some of the built-in stress. But only up to a point.
Popular Science (http://www.popsci.com/science/article/2011-03/gray-matter-cant-take-heat)
Title: Re: They don't make Pyrex like they used to
Post by: Eupher on May 13, 2011, 10:54:03 AM: I will keep that in mind.
Title: Re: They don't make Pyrex like they used to
Post by: Gina on May 13, 2011, 10:55:37 AM: Good thing I hate cooking, now another reason to say why I don't
Title: Re: They don't make Pyrex like they used to
Post by: JohnnyReb on May 13, 2011, 11:02:13 AM: Doesn't matter. I can break anything.
Title: Re: They don't make Pyrex like they used to
Post by: CG6468 on May 13, 2011, 02:14:21 PM: I read about this a few years ago. The China shit will also sometimes practically explode in an oven; no handling is required. Our daughter had one do exactly that. She heard a BANG, looked in the oven, and it was disaster city in there. Pieces of glass and food all over the inside of the oven.

We don't own any of the crap.
Title: Re: They don't make Pyrex like they used to
Post by: Gina on May 13, 2011, 05:37:39 PM: OT but something I learned in cubscouts....you can put a styrofoam cup with water in it on a full fire and it will not burn until the water boils out of it!
Title: Re: They don't make Pyrex like they used to
Post by: thundley4 on May 13, 2011, 05:48:55 PM: Quote from: Gina on May 13, 2011, 05:37:39 PM
OT but something I learned in cubscouts....you can put a styrofoam cup with water in it on a full fire and it will not burn until the water boils out of it!

Something that I learned a party one night. Put an unopened can of beer on a small fire and the exploding can can put the fire out.
Title: Re: They don't make Pyrex like they used to
Post by: Gina on May 13, 2011, 05:53:34 PM: Quote from: thundley4 on May 13, 2011, 05:48:55 PM
Something that I learned a party one night. Put an unopened can of beer on a small fire and the exploding can can put the fire out.

and someone's eyeball :lmao:

what a waste of beer! :cheersmate:
Title: Re: They don't make Pyrex like they used to
Post by: Chris_ on May 13, 2011, 05:57:55 PM: You found that out too, eh?

I had a quart bottle that went off like a gunshot. It was pretty damn loud.
Title: Re: They don't make Pyrex like they used to
Post by: Thor on May 14, 2011, 09:45:50 PM: Quote from: chris_ on May 13, 2011, 05:57:55 PM
You found that out too, eh?

I had a quart bottle that went off like a gunshot. It was pretty damn loud.

You wasted a quart of beer?!?!?!?!? That's alcohol abuse !!!
Title: Re: They don't make Pyrex like they used to
Post by: Wineslob on June 02, 2011, 05:24:13 PM: Quote from: thundley4 on May 13, 2011, 05:48:55 PM
Something that I learned a party one night. Put an unopened can of beer on a small fire and the exploding can can put the fire out.

So can a handfull of .38's. :whistling:
Title: Re: They don't make Pyrex like they used to
Post by: LC EFA on June 02, 2011, 06:02:15 PM: Quote from: thundley4 on May 13, 2011, 05:48:55 PM
Something that I learned a party one night. Put an unopened can of beer on a small fire and the exploding can can put the fire out.

So does spaghetti and baked beans.

Mosquito repellent not so much,