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Hi /diy/, I make vacuum tubes. I make other things as well, but the tubes are by far the most interesting thing. I've been documenting my projects here:
If you have any questions, ask away. I don't typically browse here, but it seems like the best place to put this. If you're wondering why the site has almost a year's worth of projects and only ~500 views, it's because I've mostly been using the site to show things to my friends and family what I do in my spare time. I never considered my projects to be novel enough to be worth publicizing. Yesterday I made a working triode though, and I got so excited about it that I had to share it with other people. I'd suggest you start at the bottom, or at least at the vacuum chamber article if you want to have a good idea of what's going on.
Stripping circuit boards, HDDs etc for precious metals
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Is it worth stripping motherboards, circuit boards, HDDs, PSUs etc for precious metals?
Can you make little pocket money and learn a little about metals and electronic parts on the process.
I'm in the UK but I don't know whether the gold, magnets, aluminium are going to worth the time invested.
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So, I was installing a new thermostat for my girlfriend and when I turned the breaker off, I only turned off the ac breaker, not looking or realizing that her heat was on a different breaker. I just assumed the breaker labeled "ac unit "meant both.
Well, the wires sparked and now neither her old or new thermostats are getting power. I even touched the red and green wires together to try and get the blower to turn on, but nothing.
Have I blown something in her unit? I didn't smell anything.
Any help would be appreciated.
Lumber cut list
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I have access to a bunch of hemlock logs and a sawmill. I need to cut them all and sticker them up. I don't have a cut list for future projects- I'd like a generic one.
I know I'll be cutting a bunch of posts and beams for pseudo post and beam construction. I know I'd prefer 2x6 for stick frame so that I can insulate better, and/or rip in two for 2x3 construction when I don't need to insulate.
In my head, I should do a certain number (or percentage) of 6x6, the same for 2x6, the same for 1x. Then I'm lost. Is there a need for 2x8 or 2x10? probably for rafters and joists... It's not too hard to rip them later, but I don;t want to end up with piles years from now where I ask why I bothered making so many of something.
I can always buy what I'm missing, but posts are the most expensive for rough cut (don;t ask me why, seems silly).
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How do calculated the pressure rating of a bolt?
Specifically, I am tapping some stainless steel pipe to make a rifle barrel. Project is a homemade matchlock just to say I did, and fire once a year to feel proud of myself. I want to plug one end with a bolt (5/8), and was wondering what length of bolt would be required to achieve a 15,000-20,000 psi rating.