Ask HN: What's the coolest physical thing you've made?

Post by hattmall » Mon, Aug 07, 2023, 10:49 PM UTC

tracker1 wrote: post #401

mattbrewsbytes wrote: post #211

Earlier quoted context omitted.

Similarly, I have felt huge satisfaction with DIY repairs. Re-plumbing a couple sinks and replacing a garbage disposal and/or adding a dishwasher is not hard to do, the building codes aren't terribly overbearing and its like Lego connecting things together with immediate feedback loop when testing for leaks (modern PVC plumbing, not older copper/metal). When you own a home and have the time, there are some tasks that…

Yeah, that's the spot I'm in right now... contract rates where I live went through the roof over the pandemic and never came back down. Aside: I wish I could smack whoever did the wiring in my home. They saved a few dollars on a breaker, but if I run my AVR/TV + Microwave (in adjacent kitchen) and the lights are on in the summer, it blows the breaker. And there's a dozen spaces on the box still available even.

Post by comprev » Mon, Aug 07, 2023, 10:52 PM UTC

Post by ZainRiz » Mon, Aug 07, 2023, 10:53 PM UTC

Post by randomNumber7 » Mon, Aug 07, 2023, 10:56 PM UTC

Post by LesZedCB » Mon, Aug 07, 2023, 11:01 PM UTC

foobarbecue wrote: post #410

LesZedCB wrote: post #388

Earlier quoted context omitted.

that's so cool! what do you do to keep the screw cores from freezing up solid? I've found myself blowing them out, sometimes unsuccessfully to evacuate the ice core.

You are right on the money. We never really solved that problem for cold ice. The fumarolic ice caves we tested in were close to 0C, so it wasn't a problem. But we did a test campaign in a -25C walk-in freezer, and had to use a hot air gun to clear the end effector manually every step. If we got funded to do another version I think we would try to incorporate some kind of heater.