Matt Keeter
@mattkeeter.com
✨ Weird CAD and graphics research
⚙️ Embedded software and Rust
🌎 Cambridge, MA
🏠 mattkeeter.com
⚙️ Embedded software and Rust
🌎 Cambridge, MA
🏠 mattkeeter.com
possibly mixing up two stories – Invisalign does industrial-scale 3D printing to make their retainers, and Amos Dudley did a DIY version:
amosdudley.com/weblog/Ortho
amosdudley.com/weblog/Ortho
Orthoprint, or How I Open-Sourced My Face | Amos Dudley
amosdudley.com
January 12, 2026 at 9:11 PM
possibly mixing up two stories – Invisalign does industrial-scale 3D printing to make their retainers, and Amos Dudley did a DIY version:
amosdudley.com/weblog/Ortho
amosdudley.com/weblog/Ortho
oh nice, love to see a more recent take on those ideas!
January 12, 2026 at 9:07 PM
oh nice, love to see a more recent take on those ideas!
self-care is replacing the Bluesky app with the Kindle app, and reading @adapalmer.bsky.social's "Inventing the Renaissance" for 5-10 minutes at 2 hour intervals throughout the night instead
January 12, 2026 at 9:06 PM
self-care is replacing the Bluesky app with the Kindle app, and reading @adapalmer.bsky.social's "Inventing the Renaissance" for 5-10 minutes at 2 hour intervals throughout the night instead
grab me a cool sticker from hot topic please
January 12, 2026 at 9:02 PM
grab me a cool sticker from hot topic please
Nice work! You may also enjoy the Gigavoxels paper:
dl.acm.org/doi/10.1145/...
(it's a bit old, but the GPU-driven visibility updates described in §6 seems relevant to your interests)
dl.acm.org/doi/10.1145/...
(it's a bit old, but the GPU-driven visibility updates described in §6 seems relevant to your interests)
January 12, 2026 at 8:45 PM
Nice work! You may also enjoy the Gigavoxels paper:
dl.acm.org/doi/10.1145/...
(it's a bit old, but the GPU-driven visibility updates described in §6 seems relevant to your interests)
dl.acm.org/doi/10.1145/...
(it's a bit old, but the GPU-driven visibility updates described in §6 seems relevant to your interests)
No, but I am using an iPhone SE (2022) – I'm clearly being unreasonable to expect Apple to test on such an outdated device with a mere 4.7" screen
January 11, 2026 at 3:06 PM
No, but I am using an iPhone SE (2022) – I'm clearly being unreasonable to expect Apple to test on such an outdated device with a mere 4.7" screen
the hardest problem in computer science is not overlapping text in a 2D layout
January 11, 2026 at 3:00 PM
the hardest problem in computer science is not overlapping text in a 2D layout
"Claude Opus 4.5 has been an experiment by the Harvard University Department of Parapsychology, and the study has now ended. Thank you for your participation in this important scientific research."
January 7, 2026 at 6:54 PM
"Claude Opus 4.5 has been an experiment by the Harvard University Department of Parapsychology, and the study has now ended. Thank you for your participation in this important scientific research."
Reposted by Matt Keeter
Me writing compute shaders: Haha fuck yeah!!! Yes!!
Me debugging compute shaders: Well this fucking sucks. What the fuck.
Me debugging compute shaders: Well this fucking sucks. What the fuck.
January 5, 2026 at 2:50 PM
Me writing compute shaders: Haha fuck yeah!!! Yes!!
Me debugging compute shaders: Well this fucking sucks. What the fuck.
Me debugging compute shaders: Well this fucking sucks. What the fuck.
Me writing compute shaders: Haha fuck yeah!!! Yes!!
Me debugging compute shaders: Well this fucking sucks. What the fuck.
Me debugging compute shaders: Well this fucking sucks. What the fuck.
January 5, 2026 at 2:50 PM
Me writing compute shaders: Haha fuck yeah!!! Yes!!
Me debugging compute shaders: Well this fucking sucks. What the fuck.
Me debugging compute shaders: Well this fucking sucks. What the fuck.
absolute clown-shoes operating system
January 5, 2026 at 1:42 AM
absolute clown-shoes operating system
the "Emergent Misalignment" paper showed that fine-tuning LLMs to generate insecure code also made them sexist and homicidal, so the idea of a highly correlated "badness vector" isn't as wild as it sounds...
Emergent Misalignment
Emergent Misalignment: Narrow finetuning can produce broadly misaligned LLMs
www.emergent-misalignment.com
January 5, 2026 at 1:32 AM
the "Emergent Misalignment" paper showed that fine-tuning LLMs to generate insecure code also made them sexist and homicidal, so the idea of a highly correlated "badness vector" isn't as wild as it sounds...
those were some particularly deadly carols
January 5, 2026 at 12:40 AM
those were some particularly deadly carols
Is there an echo in here?
January 4, 2026 at 2:34 PM
Is there an echo in here?
excellent bait, well done
January 4, 2026 at 7:20 AM
excellent bait, well done
They should be, but it’s been a while since I’ve touched it, so I’m only somewhat confident!
January 3, 2026 at 9:23 PM
They should be, but it’s been a while since I’ve touched it, so I’m only somewhat confident!
Was there a backtrace that popped up? Normally that should give a hint to the cause, but there’s no real logging in the app
January 3, 2026 at 8:57 PM
Was there a backtrace that popped up? Normally that should give a hint to the cause, but there’s no real logging in the app
yeah seems pretty risky
January 3, 2026 at 3:30 PM
yeah seems pretty risky
Good morning to everyone that wasn’t up at 3:30am feeding a baby and is checking the news for the first time!
January 3, 2026 at 2:59 PM
Good morning to everyone that wasn’t up at 3:30am feeding a baby and is checking the news for the first time!
January 3, 2026 at 1:21 PM
Good morning to everyone that wasn’t up at 3:30am feeding a baby and is checking the news for the first time!
many such cases!
up at 3:30 am to feed the baby, time to take a big drink of water and check the news
January 3, 2026 at 12:07 PM
many such cases!