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

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

#221
I made a replica of the… device that a popular video game called Counter Strike uses in game[1]

I designed and 3D printed everything myself including the circuit board, and overall it was a really fun project to work on. There were some areas I could have been more accurate to what the in game model looks like but maybe in a version 2.

It’s a cool thing that sits on my desk and does not leave the house.

[1]: https://www.reddit.com/r/csgo/comments/10vvupj/i_made_a_repl...

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

#222

My family and I built a two story house as a family cabin in 1992-4, which was a cool experience, albeit exhausting and humbling. The only things we didn't do were the foundation and some of the finish drywall. Everything else we did mostly in a single summer, from the first floor joists to the roof (which we did in 90F weather!). Great experience, really helped me understand what is behind the walls of my future hom…

I'd love to do something like this with my family someday. Any advice based on your experience?

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

#223

This may or may not fit into the OP's intention but some of my favorite physical achievements are repairs that might be impressive for a random suburban dad :) 1. Two years ago our basement flooded a week after we bought the house. I ended up tearing out the now-saturated carpet and put in vinyl plank flooring. Mainly straight forward but requires planning and at some points tricky sawing. It's cool when people come…

Were vendors willing to work with you directly or was there some process to building a relationship with them? And what were some of the challenges you ran into while doing the replacement?

I somehow found a store in Queens that sold AC parts to repairmen ~ no idea how I originally found it.

I remember Citi-biking over the 59th street bridge to pick up stuff ~ first capacitors, eventually a motor - which is what ended up being the real issue.

The store got a kick out of working w me at first but I think they eventually found it annoying. I suspect repair-folks don't do a lot of returns. EG - if they buy a capacitor and then it's not what was wrong, they end up keeping it for another job whereas I retired it. Also, when I bought the motor that was the manufacturer specified replacement, it wasn't a perfect match for some other part of the unit. I had to bike back to the store and the guy gave me some bushings (which solved the issue) but real repair people would probably know that the shaft thickness changed on that motor and carry some bushings around anyway.

So yeah they were fine to do business with me but they normally deal with large-size orders probably, so my stuff was "cute" but most certainly not a priority for them.

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

#225

A titanium road bike frame. UBI in Ashland OR USA had a 2 week course during which you learn to and complete a frame. You didn't need prior experience but I took a welding course in a community college beforehand.

Very cool. I wanted a custom frame for my hard to fit wife. The bike shop (dragonfly bike shop in Davis CA) offered a custom frame or I could build one myself for the same price.

I ended up taking the semester class that met twice a week for an evening. Had an overview of bike design, light overview of drafting, and used a 1:1 frame drawing on paper. Handy to be able to hold up the frame you are working on up to the paper. It was fun to go from a pile of bike tubes to a usable bike frame. The meeting of 4 tubes at the bottom bracket had a surprisingly complicated interface. I'm glad I sprung for the powder coating at some bike frame aware place, maybe Cycle Art?

Recommended if you get the chance.

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

#226

I made a replica of the… device that a popular video game called Counter Strike uses in game[1] I designed and 3D printed everything myself including the circuit board, and overall it was a really fun project to work on. There were some areas I could have been more accurate to what the in game model looks like but maybe in a version 2. It’s a cool thing that sits on my desk and does not leave the house. [1]: https://…

Oh wow. Thats very well done and also an extremely alarming looking object

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

#227
post #218

This may or may not fit into the OP's intention but some of my favorite physical achievements are repairs that might be impressive for a random suburban dad :) 1. Two years ago our basement flooded a week after we bought the house. I ended up tearing out the now-saturated carpet and put in vinyl plank flooring. Mainly straight forward but requires planning and at some points tricky sawing. It's cool when people come…

What was your AC repair? Did it involve dealing with the refrigerant system or just other electronic components? If so, I'd be shocked too -- AFAIK most commonly-used refrigerant compounds are not generally available to civilians because of the environmental damage caused by their irresponsible discharge.

No, not refrigerant. I think I ruled that out pretty quickly because one of the symptoms was icing on the evaporator side - so I figured the compressor side was producing enough cool.

At the end of the day the problem was the evaporator blower motor. It was insidious because it certainly worked and moved air around, but it was something like a 3 speed motor and the 2nd speed was failing and not moving enough air around, hence the icing and not producing enough air, something like that.

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

#228
post #29

A fence on a ridge. High tensile wire, pickets and some other fancy stuff. All hills and transitions. 1 pedestrian gate and 1 wideish chainlink gate. Wood posts and tposts. Box braces and such.

I'm looking at doing some of that and having a hard time finding good resources. What did you use?

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

#229
This was a very long time ago, but it's what comes to mind.

In middle school we had an egg drop competition where we needed to make a device that would allow a raw egg to survive a fall from the ladder on the back of a fire truck. The device was subject to various limitations like not having a parachute or an engine.

Everyone else had these elaborate contraptions with springs and whatnot. My solution was a bunch of egg cartons bound together with twine. I made it in half an hour. It was the only one that survived the first round.

I think you could have dropped it out of a plane.

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