I've been working on the latest experiment over the last few weeks (github.com/hannobraun/f...). It's going great so far! (post 1 of 4)
fornjot/experiments/2025-12-03 at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
December 22, 2025 at 1:34 PM
I've been working on the latest experiment over the last few weeks (github.com/hannobraun/f...). It's going great so far! (post 1 of 4)
I went ahead and started a new experiment to sketch out some of my ideas on local geometry representation: github.com/hannobraun/f...
fornjot/experiments/2025-11-07 at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
November 7, 2025 at 2:24 PM
I went ahead and started a new experiment to sketch out some of my ideas on local geometry representation: github.com/hannobraun/f...
I'm trying to port the spacer model (github.com/hannobraun/f...) to the new API, to confirm my hunch about the 3MF validation issue. Of all models in the repository, it should be the simplest that triggers the problem.
fornjot/models/spacer at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
February 27, 2026 at 11:32 AM
I'm trying to port the spacer model (github.com/hannobraun/f...) to the new API, to confirm my hunch about the 3MF validation issue. Of all models in the repository, it should be the simplest that triggers the problem.
I just finished the first in what I expect to be a series of experiments on how to evolve Fornjot's architecture! A write-up (and documented code) is available here: github.com/hannobraun/f...
fornjot/experiments/2024-10-30 at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
November 27, 2024 at 9:10 PM
I just finished the first in what I expect to be a series of experiments on how to evolve Fornjot's architecture! A write-up (and documented code) is available here: github.com/hannobraun/f...
This month's sponsor update finally went out! Summary here: www.fornjot.app/blog/sponsor...
Fornjot - Sponsor Update - 2025-05
www.fornjot.app
May 13, 2025 at 6:50 PM
This month's sponsor update finally went out! Summary here: www.fornjot.app/blog/sponsor...
I'm still procrastinating on the 3MF validation problem, opting to port the simpler cuboid model (github.com/hannobraun/f...) instead, while improving the new API along the way.
Since that worked out, I now have a strong suspicion on what's causing the validation issue with the more complex model.
Since that worked out, I now have a strong suspicion on what's causing the validation issue with the more complex model.
fornjot/models/cuboid at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
February 25, 2026 at 10:52 AM
I'm still procrastinating on the 3MF validation problem, opting to port the simpler cuboid model (github.com/hannobraun/f...) instead, while improving the new API along the way.
Since that worked out, I now have a strong suspicion on what's causing the validation issue with the more complex model.
Since that worked out, I now have a strong suspicion on what's causing the validation issue with the more complex model.
I just sent out the monthly update to my Fornjot sponsors! Summary here: www.fornjot.app/blog/sponsor...
Fornjot - Sponsor Update - 2025-02
www.fornjot.app
February 3, 2025 at 8:10 PM
I just sent out the monthly update to my Fornjot sponsors! Summary here: www.fornjot.app/blog/sponsor...
But I'm back now! I documented [the latest experiment](github.com/hannobraun/f...) to conclude it, and I'm excited to move on to the next one. Good stuff to come, hopefully.
fornjot/experiments/2024-12-09 at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
March 17, 2025 at 7:36 PM
But I'm back now! I documented [the latest experiment](github.com/hannobraun/f...) to conclude it, and I'm excited to move on to the next one. Good stuff to come, hopefully.
I'll probably need another day or so to finalize the sponsor update. In the meantime, work continues on integrating the code from the successful experiment into the existing Fornjot libraries. I moved over the first module and have started cleaning up and documenting: github.com/hannobraun/f...
fornjot/crates/fj-core/src/new/topology at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
February 4, 2026 at 3:39 PM
I'll probably need another day or so to finalize the sponsor update. In the meantime, work continues on integrating the code from the successful experiment into the existing Fornjot libraries. I moved over the first module and have started cleaning up and documenting: github.com/hannobraun/f...
Now Spinning: 🔊Mammoth Storm | Fornjot. Riff-Stürme knarzen und grummeln und umfließen den auf- und abschwellenden, tiefen Gesang. Dooooooooom!
November 23, 2023 at 7:56 PM
Now Spinning: 🔊Mammoth Storm | Fornjot. Riff-Stürme knarzen und grummeln und umfließen den auf- und abschwellenden, tiefen Gesang. Dooooooooom!
This Week's Project Spotlight💡
Fornjot
Fornjot is an early-stage Computer-Aided Design (CAD) kernel designed to provide a foundation for developers building mechanical CAD applications.
#rust #rustlang #programming
Fornjot
Fornjot is an early-stage Computer-Aided Design (CAD) kernel designed to provide a foundation for developers building mechanical CAD applications.
#rust #rustlang #programming
June 12, 2025 at 7:16 AM
This Week's Project Spotlight💡
Fornjot
Fornjot is an early-stage Computer-Aided Design (CAD) kernel designed to provide a foundation for developers building mechanical CAD applications.
#rust #rustlang #programming
Fornjot
Fornjot is an early-stage Computer-Aided Design (CAD) kernel designed to provide a foundation for developers building mechanical CAD applications.
#rust #rustlang #programming
But before I get on that, I need to integrate the model that the latest experiment defines into the models directory (github.com/hannobraun/f...), in a way that the automated integration testing setup can deal with.
fornjot/models at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
February 17, 2026 at 12:15 PM
But before I get on that, I need to integrate the model that the latest experiment defines into the models directory (github.com/hannobraun/f...), in a way that the automated integration testing setup can deal with.
This Week's Project Spotlight💡
Fornjot
Fornjot is an early-stage Computer-Aided Design (CAD) kernel designed to provide a foundation for developers building mechanical CAD applications.
#rust #rustlang #programming
Fornjot
Fornjot is an early-stage Computer-Aided Design (CAD) kernel designed to provide a foundation for developers building mechanical CAD applications.
#rust #rustlang #programming
June 11, 2025 at 7:50 AM
This Week's Project Spotlight💡
Fornjot
Fornjot is an early-stage Computer-Aided Design (CAD) kernel designed to provide a foundation for developers building mechanical CAD applications.
#rust #rustlang #programming
Fornjot
Fornjot is an early-stage Computer-Aided Design (CAD) kernel designed to provide a foundation for developers building mechanical CAD applications.
#rust #rustlang #programming
My latest sponsor update just went out! Summary here: www.fornjot.app/blog/sponsor...
Fornjot - Sponsor Update - 2025-04
www.fornjot.app
April 3, 2025 at 2:20 PM
My latest sponsor update just went out! Summary here: www.fornjot.app/blog/sponsor...
Finally got this month's sponsor update done. Summary here: www.fornjot.app/blog/sponsor...
Fornjot - Sponsor Update - 2026-03
www.fornjot.app
March 11, 2026 at 3:57 PM
Finally got this month's sponsor update done. Summary here: www.fornjot.app/blog/sponsor...
I just sent out my monthly sponsor update: www.fornjot.app/blog/sponsor...
Fornjot - Sponsor Update - 2025-01
www.fornjot.app
January 6, 2025 at 8:34 PM
I just sent out my monthly sponsor update: www.fornjot.app/blog/sponsor...
Sounds a lot like Code-CAD, particularly the 2D subset. Interesting prior art: cadquery, build123d, kittycad, fornjot.
November 19, 2025 at 6:18 PM
Sounds a lot like Code-CAD, particularly the 2D subset. Interesting prior art: cadquery, build123d, kittycad, fornjot.
I don't actually need any real-time collision detection for Fornjot, specifically, but the book has all those low-level intersection tests and closest-point tests, that are super useful when working with geometry.
April 15, 2026 at 8:43 PM
I don't actually need any real-time collision detection for Fornjot, specifically, but the book has all those low-level intersection tests and closest-point tests, that are super useful when working with geometry.
I have decided to stop working on Fornjot. The project is shutting down. Here's the full announcement: www.fornjot.app/blog/shuttin...
Fornjot - Shutting Down Fornjot
www.fornjot.app
June 19, 2026 at 10:12 AM
I have decided to stop working on Fornjot. The project is shutting down. Here's the full announcement: www.fornjot.app/blog/shuttin...
I've been experimenting over the last few weeks! This video is from a prototype where I'm exploring a re-imagined Fornjot based on an interactive core.
November 25, 2024 at 7:29 PM
I've been experimenting over the last few weeks! This video is from a prototype where I'm exploring a re-imagined Fornjot based on an interactive core.
While I've been procrastinating on my 3MF validation problem, I've simplified the zoo of Fornjot libraries: `fj-interop` and `fj-math` are now part of `fj-core`.
February 22, 2026 at 10:19 AM
While I've been procrastinating on my 3MF validation problem, I've simplified the zoo of Fornjot libraries: `fj-interop` and `fj-math` are now part of `fj-core`.
Here's the background, if you're interested in knowing more. Took me many days to figure out that this was happening: github.com/hannobraun/f...
Document degenerate case · hannobraun/fornjot@2d5c79c
github.com
August 20, 2025 at 8:08 AM
Here's the background, if you're interested in knowing more. Took me many days to figure out that this was happening: github.com/hannobraun/f...
Morning Coffee and Metal- Fornjot by Mammoth Storm #doommetal
October 5, 2023 at 2:20 PM
Morning Coffee and Metal- Fornjot by Mammoth Storm #doommetal
This went pretty quick and painless, all things considered, which has been the case for this whole experiment (link, by the way: github.com/hannobraun/f...).
fornjot/experiments/2025-12-03 at main · hannobraun/fornjot
Early-stage b-rep CAD kernel, written in the Rust programming language. - hannobraun/fornjot
github.com
December 31, 2025 at 11:54 AM
This went pretty quick and painless, all things considered, which has been the case for this whole experiment (link, by the way: github.com/hannobraun/f...).