Liquid glass is poured over a bath of liquid tin where it floats on top, gradually cooling until it can be lifted off, annealed to prevent cracking, cut and packaged.
Also, this all has to be done without oxygen, because tin dioxide will stick to glass
I love seeing examples of the old ways still being produced. I always thought old glass panes weren’t totally flat because of the way things like glass and vinyl warp, and now I’m wondering if it was actually just that way since production. I’m not sure how long it takes glass to warp like that or how it would look different from drawn glass
Glass doesn’t flow, that’s a myth from the fact that when people installed drawn glass they favoured putting the thicker side down so that it was more stable.
Oh! Well how about that. I was so sure it was true, over a long period of time, but I just looked it up and lo and behold you’re right. I’m learning a lot in this one thread
You should check out this guy’s Instagram. He goes hard on restoring old windows with a focus on sharing knowledge.
https://instagram.com/gantelius_fonsterhantverk?igshid=MmU2YjMzNjRlOQ==
I kept trying to reply way back when and couldn’t get it to post, but I followed that guy and I love every time his work pops up, it’s so freaking satisfying to watch