I bottle to flip top 750 ml bottles. Should I keep using the same ones forever, or do they weaken over time, and I should get a new set some day?
I'm not extremely careful with them, I often clean them in my stainless steel sink, stack them... I primarily do beer, but also carbonated hard lemonade and cider.
And please, for the love of science, don't even think of telling me that glass is a liquid. The two forum posts I clicked on when I started researching this had people saying that glass at normal temperature is a liquid.