Daily Archives: 2024-06-15

Survival of the Mediocre Mediocre (2018)

Source: Hacker News

Article note: It's a 2018 essay and _way_ too wordy, but the essential argument - that super-optimizing for present conditions will leave an entity without the energy/flexibility to adapt to changes in conditions - is good and, although everyone would say they agree if asked, there is a lot of personal and organizational min-maxing behavior that indicates they behave to the contrary.
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Building an O2 concentrator for welding and vacuum tube work

Source: Hacker News

Article note: Pressure Swing Adsorption is just neat. I'd been curious how hard it is to DIY one of these things since Zeolite 13x is pretty cheap and accessible, the concept is simple, and the pressures aren't _alarmingly_ high. Looks like the OxyKit folks saw that thought through. I'm kind of curious how - in the current post-COVID in the US market context - DIYing this thing competes with a cheap commercial one (which looks like it can get down into the $200 range) or maybe an electrolysis splitter on cost and practicality. I'm curious about some applications for a little concentrated O2, like the potential of using an O2 assist on a cutting laser.
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