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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
590•klaussilveira•11h ago•170 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
896•xnx•16h ago•544 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
93•matheusalmeida•1d ago•22 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
20•helloplanets•4d ago•13 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
26•videotopia•4d ago•0 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
200•isitcontent•11h ago•24 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
199•dmpetrov•11h ago•91 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
312•vecti•13h ago•136 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
353•aktau•17h ago•176 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
22•romes•4d ago•2 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
354•ostacke•17h ago•92 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
458•todsacerdoti•19h ago•229 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
7•bikenaga•3d ago•1 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
80•quibono•4d ago•18 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
256•eljojo•14h ago•154 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
53•kmm•4d ago•3 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
390•lstoll•17h ago•263 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
231•i5heu•14h ago•177 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
120•SerCe•7h ago•98 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
136•vmatsiiako•16h ago•59 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
68•phreda4•10h ago•12 comments

Zlob.h 100% POSIX and glibc compatible globbing lib that is faste and better

https://github.com/dmtrKovalenko/zlob
12•neogoose•4h ago•7 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
25•gmays•6h ago•7 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
44•gfortaine•9h ago•13 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
271•surprisetalk•3d ago•37 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1043•cdrnsf•20h ago•431 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
171•limoce•3d ago•90 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
60•rescrv•19h ago•22 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
89•antves•1d ago•64 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
14•denuoweb•1d ago•2 comments
Open in hackernews

How to make precise sheet metal parts (photochemical machining) [video]

https://www.youtube.com/watch?v=bR9EN3kUlfg
99•surprisetalk•2mo ago

Comments

car•2mo ago
Along these lines, a current Kickstarter project, which uses a 3D printer and a saltwater jet in a very clever way to ablate metal electrochemically. It even presents the prospect of doing metal deposition printing by reversing the process/current (skip to 9:50).

https://www.kickstarter.com/projects/athenatech/liquid-blade...

thendrill•2mo ago
I wish every engineer would aspire to be like him. He is truly worthy!
ZiiS•2mo ago
To be clear, if you read Hacker News you owe it to yourself to watch the entire Applied Science back catalogue; without exception every video is fascinating.
f1shy•2mo ago
Is clear that the guy has some money to invest in those experiments. But apart from that, what he does, is so many different topics, is just mind blowing.

Even if I had the money and space he has, I could never ever do what he does.

From some videos is clear how much perseverance he has, often he reports about months and months of failure after failure, until he succeeds. I think THAT is the most impressive part of his videos, and what I try to learn from.

ZiiS•2mo ago
One of the few points maintaining faith in humanity; is there are companies happy to pay you that money if you can do what he does.
f1shy•2mo ago
In his case, google.
extraduder_ire•2mo ago
I think he stopped working at google a few years ago to focus on these projects full time.
f1shy•2mo ago
I did not know. If so, any idea how he pays for it?

I know he worked at Valve, then he had his own company (something about building prostheses, and the last was google.

extraduder_ire•2mo ago
He does have over a thousand paying members on patreon, so I assume that's a big chunk of it.

The list of names at the end of his videos has some other youtubers I recognise.

f1shy•2mo ago
I remember laughing so hard the first time I saw the video, and he said:

"... the nightmare scenario here is: you've got this super powerful pump, you know, making 30 or 40 PSI, at gallons per minute flow rates of hot ferric chloride; and if one of those things bursts, I mean the mess is just going to be beyond spectacular.

okay let's press the start button..."

metalman•2mo ago
this has been used in aerospace for a long time, and while making the process accesable, it does nothing for the engineering and validation required to offer complete solutions
petermcneeley•2mo ago
Looks like the photochemical part is for the mask. The rest is a applied chemical etch.