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ceramics.org

Superfest, chemically strengthened glass

  • Landless2029@lemmy.world
    2·
    3 hours ago

    I purchased 2x12 16oz ball wide mouth mason jars like 15 years ago. Only one got a chip in all that time.

    Fun accessories too. I got sleeves to make them insulated, stainless steel lids with silicone gaskets for topping stuff to toss in fridge or just covering a drink while outdoors and even pour spouts to make tiny pitchers. They have measurments on the side so all my cups are measuring cups.

    I also have the huge wide mouth ones for making cold brew, storing flour, etc.

    Sticking to that for the rest of my life I think.

  • mmmm@sopuli.xyz
    321·
    1 day ago

    Even though Superfest glasses soared in popularity, their lifespan was cut short once it became clear that the product was too durable.

    Ah yes, capitalism striking again

  • kalpol@lemmy.ca
    12·
    1 day ago

    We used to have the good Pyrex, and Corning Ware too. How times have changed

    • davel@lemmy.mlEnglish
      6·
      1 day ago

      Last I heard, there were two Pyrex’s in production, and you could tell the good from the bad by subtle differences in branding.

      Edit to add: https://lifehacker.com/that-viral-pyrex-brand-hack-is-horseshit-folks-1850157381

      So, how can you actually tell if you’re dealing with “real” Pyrex? As a rule of thumb, it’s safe to simply assume you aren’t—at least, not if you’re in the United States. The “real stuff” hasn’t existed at all in the U.S. market for at least 30 years. Pyrex started phasing out borosilicate glass in the 1950s and had stopped using it entirely by 1998, when World Kitchen (now Corelle Brands) bought the license to the PYREX and pyrex brands. Unless you buy your cookware from a vintage shop that can prove it was manufactured in the 1940s or earlier, you’re very unlikely to come across borosilicate glass pyrex.

      • MeowZedong@lemmygrad.mlEnglish
        3·
        4 hours ago

        You can also tell by looking at the glass. If you look at an edge, you should be able to see the color of the glass and it will either see yellow or a blue.

        Yellow is soda glass, blue is borosilicate.

        Also, the superfest glass still exists, but is not used for the same applications. A variation of it is used in the production of glass used in electronics such as phones and tablets. Its not every brand, but I believe Gorilla glass uses a similar procedure.

      • Leigh Weigh@lemmy.world
        2·
        16 hours ago

        I believe France still makes Pyrex with the borsillicate instead of soda glass but every other plant uses soda glass

      • kalpol@lemmy.ca
        4·
        1 day ago

        Yeah although the dates surprise me. I thought I had borosilicate Pyrex from the 60s or 70s. Anyway, sucks that it isnt made any more, it is tough stuff.

  • TrackinDaKraken@lemmy.worldEnglish
    6·
    1 day ago

    Here’s a good article about them in German:

    https://davidkrenz.de/2020/11/06/zu-gut/

    Pook and the Schwepnitzer sales management travelled to the international trade fairs Leipzig and Frankfurt. “We built a wall where we stacked the glasses. Look at this, breakfast! No reaction," Pook said. “I had the best connections to all major customers, at Coca Cola, for example, it was said, why should we take a glass, which does not break, we earn money with our glasses.” How much did he sell? Not a piece. “The traders understandably said who was already sawing off the branch he was sitting on.”

    • ShinkanTrain@lemmy.mlEnglish
      2·
      4 hours ago

      God, those Coke glasses are absolute pieces of shit. The edges are so thin you can’t convince me it wasn’t straight up designed to break.