Ben Krasnow of Applied Science shows how to make small batches of specialty glass with minimal equipment, including designing and making photochromic glass. He covers ingredients, melting and the challenges involved.
Why Hacker News points people here: Recommended as a hands-on introduction to glass melting and chemistry and to Krasnow's channel.
“I'd highly recommend his channel to anyone interested in science and fabrication.”HN comment, 2017
“I'd highly recommend his channel to anyone interested in science and fabrication.”
Intro to melting glass: equipment, chemistry, recipes, photochromic glass.
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The awesome youtube channel Applied Science put out a 40 minute intro video to melting your own glass a week or two ago, going into the equipment, chemistry and recipies: this video In particular, he talks about making your own photochromic glass that changes color in response to light. I'd highly recommend his channel to anyone interested in science and fabrication.
RecommendstomnApr 2018
“You might enjoy this, Ben Krasnow talking about the challenges of making photochromic glass”
Ben Krasnow on challenges of photochromic glass.
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This was really interesting -- not a process I've ever realy thought about. You might enjoy this, Ben Krasnow talking about the challenges of making photochromic glass: this video
Cites itcanofbarsSep 2020
Attempting to make glass from scant public information.
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I'm not a physicist or even a researcher of anything but I sometimes watch youtube videos of people experimenting with material sciences and chemistry and a trend I have seen is that even things that we consider to be very basic have a huge lack of good quality information available. One youtuber I saw spends time looking at new research papers for ideas and has found that they are just impossible to reproduce. Following the steps exactly as well as every possible variation doesn't produce anything close to the results described in the paper. In another video [0] he attempts to make glass and finds that almost all of the information available on the internet about making glass is not enough to actually make glass since they contain only enough information to register a patent but not enough to make from scratch. I wonder if we will see huge gains by just making complete and unobfiscated information available to the public since it looks like even the foundations of society are secret company internal information. [0] this video
Cites itkragenFeb 2022
“it took Ben Krasnow two months to achieve it himself”
Making transparent glass took Krasnow two months.
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Agreed! Aside from the spurious results produced by publication bias, the amount of effort spent on trying things that somebody already knows don't work is staggering. The knowledge of what doesn't work is mostly passed on tacitly through apprenticeship rather than published, which means it can easily be lost. As a simple example, we've known how to make transparent glass for 1900 years, but it took Ben Krasnow two months to achieve it himself despite having money, libraries, and glass experts at his disposal, and being generally competent at making things, having built, for example, his own electron microscope: this video
