[Normal Operating Sounds | Hacker News](https://news.ycombinator.com/item?id=38411105)
[Normal Operating Sounds](https://www.tesla.com/ownersmanual/model3/en_us/GUID-AA58ED67-9C93-4EE6-8B19-9FDABE018787.html)

[Rue de l'Avenir | Hacker News](https://news.ycombinator.com/item?id=38875794)
[Rue de l'Avenir - Wikipedia](https://en.wikipedia.org/wiki/Rue_de_l%27Avenir)

[Contra Wirecutter on the IKEA air purifier (2022) | Hacker News](https://news.ycombinator.com/item?id=38931559)
[Contra Wirecutter on the IKEA air purifier](https://dynomight.net/ikea-purifier/)
[Wirecutter: New Product Reviews, Deals, and Buying Advice](https://www.nytimes.com/wirecutter/)

[Heinz's sustainable ketchup cap | Hacker News](https://news.ycombinator.com/item?id=39547109)
[Heinz's Sustainable Ketchup Cap](https://www.lumafield.com/article/heinzs-sustainable-ketchup-cap)

[Ask HN: Do you also marvel at the complexity of everyday objects? | Hacker News](https://news.ycombinator.com/item?id=39740518)
- MAKE SURE TO INDICATE HOW COOL ALL THE STUFF IS ON NAG ENGINEERING

[I designed a cube that balances itself on a corner | Hacker News](https://news.ycombinator.com/item?id=39336139)
[Balancing cube - Willem Pennings](https://willempennings.nl/balancing-cube/)

[South Pole Water Infrastructure | Hacker News](https://news.ycombinator.com/item?id=40615530)
[South Pole Water Infrastructure](https://brr.fyi/posts/south-pole-water-infrastructure)

[Do Skis Get Blunt? | Hacker News](https://news.ycombinator.com/item?id=40902740)
[Do skis get blunt? - Marc's Blog](https://brooker.co.za/misc-blog/2024/01/23/skis.html)

[Plastics producers deceived public about recycling, report reveals | Hacker News](https://news.ycombinator.com/item?id=39387387)
['They lied': plastics producers deceived public about recycling, report reveals | Recycling | The Guardian](https://www.theguardian.com/us-news/2024/feb/15/recycling-plastics-producers-report)

[Reverse engineering the 59-pound printer onboard the Space Shuttle | Hacker News](https://news.ycombinator.com/item?id=41147643)
[Reverse engineering the 59-pound printer onboard the Space Shuttle](https://www.righto.com/2024/08/space-shuttle-interim-teleprinter.html)

[Cold brew coffee in 3 minutes using acoustic cavitation | Hacker News](https://news.ycombinator.com/item?id=40284823)
[Hear that? That's the sound of an ultrasonic cold brew coffee ready in under three minutes](https://www.unsw.edu.au/newsroom/news/2024/05/Ultrasonic_cold_brew_coffee_ready_under_three_minutes)

## corners

with the exception of a structural variance in the range of the object, ALWAYS obsess about corners

the corners:
- determine the structural integrity of the thing
- are the place things impact the object the most
- are the most presented visually and to the elements

## diy

[How I replaced deadly garage door torsion springs (2002) | Hacker News](https://news.ycombinator.com/item?id=39744989)
[Garage Door Torsion Spring Replacement](https://www.truetex.com/garage.htm)

[Show HN: I made a new sensor out of 3D printer filament for my PhD | Hacker News](https://news.ycombinator.com/item?id=40003710)
[R&D Case Study: Developing the OptiGap Sensor System | Paul Bupe, Jr](https://paulbupejr.com/developing-the-optigap-sensor-system/)

[Making my own wedding rings | Hacker News](https://news.ycombinator.com/item?id=40909327)
[Geoff Greer's site: Making My Own Wedding Rings](https://geoff.greer.fm/2024/07/07/making-my-own-wedding-rings/)

## fun engineering

[Strandbeest | Hacker News](https://news.ycombinator.com/item?id=41347016)
[Strandbeest](https://www.strandbeest.com/)