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Adam Chalmers

@adamchalmers.com
3.2K followers 1.1K following 4.4K posts

Texan (prev Australian). Father (prev gamer). Pynchon fan (prev illiterate). Building a new programming language for CAD at zoo.dev. Built a lot of Cloudflare Tunnel. I run a meetup austinsystems.org and love reading sci-fi, history and Jewish stuff.

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Adam Chalmers @adamchalmers.com · 21m
a laugh-angry-cry emoji saying "the horrors persist, but so do I"
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Adam Chalmers @adamchalmers.com · 1h
"A lot of people still use Firefox! Many of them are on fosstodon dot org."
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Adam Chalmers @adamchalmers.com · 16h
You have to be comfortable with the fact that you will always have too many items in your issue backlog to do. You will always have parts of the codebase you don't understand. You will never be perfect, sorry. The goal is to know enough to get your job done, and be able to learn more when you need.
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Adam Chalmers @adamchalmers.com · 29/09/2026
It is pretty wild how insanely close the current round of AI+sexuality+SF+rationalist discourse is to the plot of Terra Ignota. Ada Palmer is basically a prophet.
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Adam Chalmers @adamchalmers.com · 29/09/2026
I actually think the way she pronounces shibboleth is really exotic and beautiful
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Doll @dollspace.gay · 29/09/2026
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USDA Choice Thinkmeat @arrdem.tirefireind.us · 29/09/2026
Bit of a long shot but do any of my followers have real human 3d artists they've worked with before? Need a couple of grey-box low-detail spaceships built out and would love to commission some Kenny-ish stuff #indiedev #3dart #shiptember maybe
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Matt Keeter @mattkeeter.com · 28/09/2026
hi friends I'm very excited to announce Halfspace, my experimental cross-platform IDE for solid modeling with distance fields! This has been in progress since midway through last year, and it's finally "done enough" to make it more public.
mattkeeter.com
Halfspace
An IDE for solid modelling with distance fields
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Adam Chalmers @adamchalmers.com · 29/09/2026
I want to know a lot less about the sex lives of various people who live in SF
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Adam Chalmers @adamchalmers.com · 28/09/2026
"i'm not doing X for ethical reasons, and also I think X is bad for pragmatic reasons" is a suspicious stance. It's correct in some circumstances, but most people have strong motivated reasoning to believe X is pragmatically bad if they also think it's ethically bad.
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Adam Chalmers @adamchalmers.com · 28/09/2026
"Give me an hour to fix a bug, and I'll spend the first 55 minutes writing tests"
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Adam Chalmers @adamchalmers.com · 28/09/2026
Lumping games from one series together (e.g. all the Myst games, Dark Souls 1 and 3, both Age of Empires and Age of Mythology), I can only really think of 6 games that influenced me.
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Adam Chalmers @adamchalmers.com · 27/09/2026
I've been obsessed with this one track, "No Werewolf", for a few months now. Today Eden decided that she likes it. "Can we listen to Daddy Music?" She got really into the groove. www.youtube.com/watch?v=6tHf...
youtube.com
No Werewolf
YouTube video by Allah-Las - Topic
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Adam Chalmers @adamchalmers.com · 27/09/2026
Oh you're rewriting your code in assembly? That's cute. Probably makes your screensavers and toys run fast. But if you're doing anything serious, you should ditch the bloated opcodes and just etch your logic into silicon instead. It's way more efficient. Your asm is cute though.
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Adam Chalmers @adamchalmers.com · 27/09/2026
I've nearly finished Factorio Space Age. Aquilo was fun. First image: top of factory, where heat + power are produced Second image: bottom of factory, where science packs (and soon, quantum processors etc) are produced.
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Adam Chalmers @adamchalmers.com · 26/09/2026
suggested AI policy: any PRs written entirely by an agent must be <30 lines long I think it's a good balance. Allows vibe-coded tiny bugfixes or features that are simple extensions of current code. But stops people submitting vibe-coded features that require reviewing thousands of unreadable LOC.
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Adam Chalmers @adamchalmers.com · 26/09/2026
it's OK to disobey orders from your commander if you've got a very high level of sexual charisma
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Adam Chalmers @adamchalmers.com · 26/09/2026
OK here is my ultimate productivity stack for work. This is the system I use to manage developing KCL, managing my team, handling cross-team requests and bugs, and prioritizing issues. Developing this workflow took me several years of relentless experimentation and optimization. Here it is:
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Adam Chalmers @adamchalmers.com · 26/09/2026
men will really spend six months thinking hard about the future of artificial and human intelligence, the plummeting cost of software, the promise of intelligence on tap, and decide that what the world needs right now more than anything is a combined email + calendar + note taking + chat app
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Adam Chalmers @adamchalmers.com · 25/09/2026
Fillets are _much_ better in KCL 3.0 (try it now by setting your version to "3.0-preview"). We added a new feature where fillets will continue around your model, following tangent edges (defaults to true, but can be toggled off). This makes it _much_ easier to apply fillets to your whole model!
A test part, with no filleted edges.The same part, but with a single `fillet` call that fillets all the top edges.The same part, but all edges have been filletted.
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Adam Chalmers @adamchalmers.com · 25/09/2026
I thought the world had finished with life-altering transformative technology, that all the change was used up in the early 20th century before I was born, but it wasn't! Dramatic change is still possible. Dramatic change for the better requires dramatic change.
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Adam Chalmers @adamchalmers.com · 25/09/2026
Is there any better feeling than showing Pantheon a sci-fi enthusiast with a young daughter
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A Whole Damn Town! @im.a.whole.damn.town · 24/09/2026
Twin Peaks: Two ducks on the shore, from the opening scenes.
Two ducks on the shore, from the opening scenes. Twin Peaks S01E01 - Northwest Passage.
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Adam Chalmers @adamchalmers.com · 23/09/2026
incredibly bullish about Jev. No idea what it does but it's only a tiny typo away from Jew. Feeling a strong kinship with this product, whatever it is.
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Adam Chalmers @adamchalmers.com · 22/09/2026
I found the Yom Kippur traditional Poster's Confession really meaningful this year.
We have subtweeted. We have argued in bad faith. We have dogpiled. We have uploaded images with no alt text. We have read the replies of our mutuals without leaving a courtesy like, and we have become irrationally angry when our posts did not get a courtesy like. We have thirsted and we have judged others for their thirst. We have posted bait, and we have taken the bait of others. We have posted cringe, we have been horny on main, we have assumed that someone’s retweet was an endorsement. We have posted things which are true but unkind. We have posted things which are kind but we knew to be false. We have scrolled when we should be sleeping or paying attention to our loved ones. We have replied seriously to a joke. We have strayed from Your good terms & services and it has not made our lives better.
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Adam Chalmers @adamchalmers.com · 23/09/2026
somehow merged 21 PRs today
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Adam Chalmers @adamchalmers.com · 22/09/2026
I found the Yom Kippur traditional Poster's Confession really meaningful this year.
We have subtweeted. We have argued in bad faith. We have dogpiled. We have uploaded images with no alt text. We have read the replies of our mutuals without leaving a courtesy like, and we have become irrationally angry when our posts did not get a courtesy like. We have thirsted and we have judged others for their thirst. We have posted bait, and we have taken the bait of others. We have posted cringe, we have been horny on main, we have assumed that someone’s retweet was an endorsement. We have posted things which are true but unkind. We have posted things which are kind but we knew to be false. We have scrolled when we should be sleeping or paying attention to our loved ones. We have replied seriously to a joke. We have strayed from Your good terms & services and it has not made our lives better.
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Adam Chalmers @adamchalmers.com · 22/09/2026
Astra loves to write tests that all your dependencies work how they should. Shhh, Astra, it's fine. Serde is not going to suddenly start including fields that are set to None.
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Adam Chalmers @adamchalmers.com · 22/09/2026
i'm going to get an award from my CEO for excellence in the field of using "i.e." in technical writing
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Adam Chalmers @adamchalmers.com · 22/09/2026
profiling heap usage is so easy. tons of helpful tools to visualize everything. profiling stack usage is SO ANNOYING.
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Adam Chalmers @adamchalmers.com · 22/09/2026
Shana tova to all of you here. I hope you had an easy fast or a meaningful yom kippur. I went to the full shacharit + mussaf for the first time since I was a kid and really enjoyed it.
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Adam Chalmers @adamchalmers.com · 21/09/2026
Daughter, lying sprawled out on my new pillow: "Read books to me daddy! While I am resting!"
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Adam Chalmers @adamchalmers.com · 21/09/2026
I told my 90-year-old grandfather-in-law last night, "May you be sealed in the book of life. And may your enemies not." I'm not sure if he appreciated the joke.
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Ted Underwood @tedunderwood.com · 25/06/2026
Meanwhile memory chips are increasing in price so fast that by the time Neuromancer comes out this fall you will *actually* be able to get killed in Chiba City for 3 MB of hot RAM.
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Adam Chalmers @adamchalmers.com · 20/09/2026
I hope this is all worth it.
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Adam Chalmers @adamchalmers.com · 20/09/2026
MacOS 27 shows a different icon for Wired vs. Wi-Fi internet :') such a good QoL improvment.
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Adam Chalmers @adamchalmers.com · 19/09/2026
Really cool to see Cloudflare Tunnel on the frontpage of Hacker News. Building tunnel was the highlight of my career. It was my second job, 2 years after graduation. Taught me so much about software engineering. In-person with a team of 3 great guys who are now my closest friends.
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Cullen @hellocullen.bsky.social · 18/09/2026
the much more disturbing "reverse pagliacci" where a clown tells you you should go see a doctor
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Adam Chalmers @adamchalmers.com · 19/09/2026
At a certain point you figure out the people you don't like working with, and figure out how to work around them instead.
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Adam Chalmers @adamchalmers.com · 18/09/2026
Just made a KCL stress test 13x faster :) Remember to profile your code after you benchmark it! The bottleneck was _NOT_ where I thought it was. github.com/KittyCAD/mod...
github.com
KCL: Fix quadratic behavior in post-extrude by adamchalmers · Pull Request #14007 · KittyCAD/modeling-app
After extruding, KCL has to update sketch line tags, to make them solid wall tags too. This was unnecessarily copying all surfaces in the sketch when only the tagged ones need to be copied. Doing a...
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Adam Chalmers @adamchalmers.com · 18/09/2026
you're reading about the crazy sex-and-drug-fuelled parties in SF engineering circles and you're worried about cults. I'm reading about the crazy parties and worried about what remote work is doing to engineering culture.
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Adam Chalmers @adamchalmers.com · 18/09/2026
I love my daughter so much :') I took her to the grocery store to buy ingredients for dinner and she was so cute. I let her choose the shape of pasta she wanted ("the ridged tubes daddy! Not those twirlies! The tubes!"). We've been listening to Fleetwood Mac, today she said "I wanna listen to Mac!"
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Adam Chalmers @adamchalmers.com · 18/09/2026
"what are you working on?" "oh, yknow, new CAD software with a programmatic coder-friendly, AI-friendly angle. What about you?" "I'm actually developing a new kind of raspberry." completely mogged by my botanist friend
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Adam Chalmers @adamchalmers.com · 17/09/2026
everyone is agentic until it's time to brush their daughter's hair.
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Adam Chalmers @adamchalmers.com · 17/09/2026
God I hate when I'm reading a blog post and I can so clearly tell it's generated by someone who's put no thought into it, and blindly copied the output from Thomas Pynchon's Ghost, Bound By Dark Magick And Forced To Explain Kubernetes
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Adam Chalmers @adamchalmers.com · 17/09/2026
guy who is anti-AI because it lets kids cheat on their homework and is also anti-homework
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Adam Chalmers @adamchalmers.com · 17/09/2026
greatest honor of my life was tonight: a non-Jewish friend married to a Jewish woman telling me that this post has become a regular part of his friend group's vernacular. Real talmudic ball-knowers get it.
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Adam Chalmers @adamchalmers.com · 17/09/2026
Austin Systems is going GREAT this month. Lightning talks on: - smart home automation - Custom pebble watch firmware - Agents for non-tech work at a tech company - Radar physics and beamforming - Power cable standards - Cloudflare PostgreSQL connection pooling - New ray tracing graphics research
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Adam Chalmers @adamchalmers.com · 16/09/2026
It feels so good to wake up and not feel tired
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Adam Chalmers @adamchalmers.com · 16/09/2026
there's some incredible new models coming out of Australia. Game-changing stuff. Happy to share more info if that's relevant to you.
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