Jern
@jernd.bsky.social
FOSS contributor, 3D Code CAD modeling enthusiast, build123d collaborating developer, python, and 3D printing. Former OpenSCAD and CadQuery user.
https://github.com/jdegenstein
https://github.com/jdegenstein
Reposted by Jern
Made parametric code that generates wind turbine terrain for wargaming.
www.patreon.com/posts/wind-t...
#cadquery #wargaming #terrain #3dprinting #pythondevelopment
www.patreon.com/posts/wind-t...
#cadquery #wargaming #terrain #3dprinting #pythondevelopment
May 24, 2026 at 2:04 PM
Made parametric code that generates wind turbine terrain for wargaming.
www.patreon.com/posts/wind-t...
#cadquery #wargaming #terrain #3dprinting #pythondevelopment
www.patreon.com/posts/wind-t...
#cadquery #wargaming #terrain #3dprinting #pythondevelopment
Here's my system prompt for use of build123d with LLMs. Greatly improves production of idiomatic build123d code! gist.github.com/jdegenstein/...
build123d-system-prompt
build123d-system-prompt. GitHub Gist: instantly share code, notes, and snippets.
gist.github.com
April 29, 2026 at 8:05 PM
Here's my system prompt for use of build123d with LLMs. Greatly improves production of idiomatic build123d code! gist.github.com/jdegenstein/...
Surface modeled this mouse in build123d while roughly following the Shawn Hymel Digikey FreeCAD tutorial youtu.be/HDGdeLWGBns #FreeCADCurves
February 26, 2026 at 12:51 AM
Surface modeled this mouse in build123d while roughly following the Shawn Hymel Digikey FreeCAD tutorial youtu.be/HDGdeLWGBns #FreeCADCurves
a recursive pattern in build123d, interactive sandbox with code here: jojain.github.io/build123d-sa...
February 19, 2026 at 5:37 AM
a recursive pattern in build123d, interactive sandbox with code here: jojain.github.io/build123d-sa...
#OSHW logo in build123d, interactive online sandbox with code here: jojain.github.io/build123d-sa...
February 18, 2026 at 3:02 AM
#OSHW logo in build123d, interactive online sandbox with code here: jojain.github.io/build123d-sa...
Introducing build123d-portable: The easiest way to get started using build123d (VS Code + 3D Viewer included, Zero-Install). Testers needed! Downloads available for Linux, Windows, MacOS (not well tested). github.com/jdegenstein/...
Releases · jdegenstein/build123d-portable
A cross-platform portable build123d installation with VSCode and OCP CAD Viewer - jdegenstein/build123d-portable
github.com
December 20, 2025 at 2:25 AM
Introducing build123d-portable: The easiest way to get started using build123d (VS Code + 3D Viewer included, Zero-Install). Testers needed! Downloads available for Linux, Windows, MacOS (not well tested). github.com/jdegenstein/...
New release of build123d dropped earlier today! Huge new functionality including better surface modeling features github.com/gumyr/build1...
Release v0.10.0 · gumyr/build123d
Breaking Changes
Convert Shape methods to properties: is_null, is_valid, shape_type. Unfortunately it isn't possible to keep the old method and deprecate it when switching over to properties. The ...
github.com
November 6, 2025 at 3:01 AM
New release of build123d dropped earlier today! Huge new functionality including better surface modeling features github.com/gumyr/build1...
Reposted by Jern
Live now!
Open Source Hardware Association (OSHWA) is doing a Show and Tell 12 hour Membership Drive with creators from all over joining us to show off their work! @oshwassociation.bsky.social www.youtube.com/watch?v=Yn0e...
Open Source Hardware Association (OSHWA) is doing a Show and Tell 12 hour Membership Drive with creators from all over joining us to show off their work! @oshwassociation.bsky.social www.youtube.com/watch?v=Yn0e...
Show and Tell 12 hour Membership Drive
YouTube video by The Open Source Hardware Association
www.youtube.com
October 6, 2025 at 4:59 PM
Live now!
Open Source Hardware Association (OSHWA) is doing a Show and Tell 12 hour Membership Drive with creators from all over joining us to show off their work! @oshwassociation.bsky.social www.youtube.com/watch?v=Yn0e...
Open Source Hardware Association (OSHWA) is doing a Show and Tell 12 hour Membership Drive with creators from all over joining us to show off their work! @oshwassociation.bsky.social www.youtube.com/watch?v=Yn0e...
Reposted by Jern
It's almost October which means it's almost Open Hardware Month! Mark your calendars and get excited because there's going to be really amazing speakers and perhaps even some sloths during our 12hr membership livestream! How are you celebrating Open Hardware Month?
www.youtube.com/watch?v=Yn0e...
www.youtube.com/watch?v=Yn0e...
September 22, 2025 at 7:28 PM
It's almost October which means it's almost Open Hardware Month! Mark your calendars and get excited because there's going to be really amazing speakers and perhaps even some sloths during our 12hr membership livestream! How are you celebrating Open Hardware Month?
www.youtube.com/watch?v=Yn0e...
www.youtube.com/watch?v=Yn0e...
Designed and rendered a measuring scoop using #build123d and #blender respectively. The user inputs a target volume for the measuring scoop, and then scipy traverses the search space and finds a scoop with the matching volume. There is a lot of potential in this kind of design optimization approach!
September 3, 2025 at 5:51 PM
Designed and rendered a measuring scoop using #build123d and #blender respectively. The user inputs a target volume for the measuring scoop, and then scipy traverses the search space and finds a scoop with the matching volume. There is a lot of potential in this kind of design optimization approach!
My latest video on YT using build123d: youtu.be/lu2fDfZheXI
Creating a table using surface modeling in build123d (recreated from CADemist)
YouTube video by JernD
youtu.be
August 15, 2025 at 2:55 AM
My latest video on YT using build123d: youtu.be/lu2fDfZheXI
New speed modeling video in build123d of a TooTallToby part in about 1m 39s youtu.be/JpdOnVKrw3I?...
build123d TooTallToby 25-07-09 Speedmodeling in 1:39.881
YouTube video by JernD
youtu.be
August 8, 2025 at 11:18 PM
New speed modeling video in build123d of a TooTallToby part in about 1m 39s youtu.be/JpdOnVKrw3I?...
Felt compelled to re-create a cool recent MangoJelly part
February 20, 2025 at 2:37 AM
Felt compelled to re-create a cool recent MangoJelly part
Interlocking tetrahedra inscribed in a dodecahedron with #build123d
February 15, 2025 at 5:21 AM
Interlocking tetrahedra inscribed in a dodecahedron with #build123d
@behindthebluemotel.com Thought you might appreciate this old logo I pulled from the inside of an old Kodak Six-20 camera I think.
February 5, 2025 at 6:27 PM
@behindthebluemotel.com Thought you might appreciate this old logo I pulled from the inside of an old Kodak Six-20 camera I think.
Threw together a very quick and dirty editor / 3D model viewer in nicegui for build123d using ocp_vscode and codemirror. Lots of potential as a model configurator too! Video demo:
January 24, 2025 at 3:59 AM
Threw together a very quick and dirty editor / 3D model viewer in nicegui for build123d using ocp_vscode and codemirror. Lots of potential as a model configurator too! Video demo:
modeled this compound of five interlocked tetrahedra using #build123d
January 15, 2025 at 3:41 AM
modeled this compound of five interlocked tetrahedra using #build123d
An I-beam knot made in #build123d 1/2
January 14, 2025 at 5:57 PM
An I-beam knot made in #build123d 1/2
Here is a #hexastix model I made in #build123d
January 3, 2025 at 8:58 PM
Here is a #hexastix model I made in #build123d