#openscad — Public Fediverse posts

A regular triangular prism viewed from bottom front. The outer sides are of length one.
The outside corner (blue arrow) is at
(1/2, -√(3)/6, 1/2).
The inside corner (black arrow) is at
((4-t×√3)/8, -(4√(3)-t×3)/24, (12-t×(4√(3)-3))/24)
where t is the thickness of the edges of the prism (0 to 1).
I found the inside coordinates by calculating the formulas for the three intersecting planes and where they intersect:
https://codeberg.org/qalle/openscad-solids/src/branch/main/wireframe-solids.md#triangular-prism

#OpenSCAD

like something BAD happened with #openscad and convexity

A cuboctahedron with holes on its faces in OpenSCAD. The coordinates of the inner corners (highlighted in blue) were not easy to derive:
(0, a, a), (a, a, 0), (a, 0, a)
where
a = (3 − t×(2√(3)−3)) × √(2) / 6
where
t is the thickness of the edges of the solid (0 to 1).

https://codeberg.org/qalle/openscad-solids/src/branch/main/wireframe-solids.md

Edit: simplified the formula

#OpenSCAD

Thanks to @gutbomb 's suggestion of doing it myself in #OpenSCAD, my website https://mmu-labs.org/ now has a logo 🙂

*Now* I can start selling products 😄

#RetroComputing #Apple #Mac68k #ORIC #ThomsonMO5 #VAIO #3DPrinting #electronics

Finally started a model of the house for accurately-dimensioned projections of what different changes might look like. The porch roof blew off in 2017 (along with the rest of the roof) and it's time to start rectifying that.

(We actually already did one-third of it in a lightweight style this spring, but it's so nice to have it under roof that we're going to do another third in a heavier wooden style so the front door won't keep raining in.)

#OpenSCAD

We are making my kid an Octonauts costume for Halloween. I coded up a nice hat in #OpenSCAD.

The round cut out is for a separately printed badge.

The hardest part is going to be fitting it to him, good thing everything is parametric. Off to do some #3dPrinting

(Octonauts character for reference)

👨‍💻 Ah, #OpenSCAD, the "programmer's" answer to 3D modeling—because who needs intuitive design when we can just code ourselves into a corner? 😂 Dive into lively discussions on IRC, because nothing screams modern community like a chat system that peaked in the 90s! 🚀
https://openscad.org/ #3Dmodeling #programming #humor #IRCcommunity #technostalgia #HackerNews #ngated

OpenSCAD the Programmers Solid 3D CAD Modeller

https://openscad.org/

Comments: https://news.ycombinator.com/item?id=49984349

#HackerNews #OpenSCAD #3DModeller #CAD #Programming #Design #Tools

OK so I built a new D&D roll box for my game. Love it!

#d&d #dnd5e #3DPrintPerfection #openscad #3dprint

Gardening With…OpenSCAD?

https://fed.brid.gy/r/https://hackaday.com/2026/10/01/gardening-with-openscad/

Ok, I am now officially way into parametric models for 3D printing.

This week's obsession (to keep me busy while dealing with a surprise cold): I really like the magnet polarity helper tool, where you have one pen per polarity, so you don't insert magnets the wrong way around

But I didn't like that it was two separate items, and decided to make a parametric version where you can screw two halves toether (and also change the size in general): https://www.printables.com/model/1860291-parametric-magic-magnet-polarity-tool-optional-two

#openscad #3dprinting

HackFest 2026 is getting closer. Here’s the program for 10 October:

12:00–18:00 — Makers expo, Hacker Corner and Learn to Solder workshop

12:15 Meschcore introduction
13:15 3D-printed fashion
14:15 Fast Linux bootstrapping
15:15 Volumetric 3D printing
16:15 Parametric antenna design with OpenSCAD
17:15 TIC-80 Bytejam

More details and tickets:
https://hackfest.nl

The picture shows maker Frank with an old 1973 electromechanical pinball machine. At HackFest, he’ll compare how this machine works with how a computer works.

#HackFestNL #Hackers #Makers #MakerFaire #OpenSource #Linux #OpenSCAD #TIC80 #Demoscene #CreativeTechnology

New prisms and antiprisms added.
https://codeberg.org/qalle/openscad-solids/src/branch/main/solids.md

#OpenSCAD

I think my regular polygons for OpenSCAD are ready. They have 3-10, 12, 14-16, 18, 20 and 24 sides. Only the four unconstructible ones (7, 9, 14 and 18 sides) use trigonometric functions.

There's also a function to draw a polygon with an arbitrary number of sides but I consider it inelegant.

https://codeberg.org/qalle/openscad-solids/src/branch/main/polygons.md

#OpenSCAD #geometry

I have to say once again the #openscad is awesome.. at least it works well for my brain. #vim and the lightweight openscad viewer open in a separate window is all the 3d design tooling I need right now. It helps that my brain thinks in constructive solid geometry.

#fruitfly #researchlab is open again for the weekend. The last model has done surprisingly well in the wild (well sitting tight on top of a compost bin that is spewing #drosophila as fast as it can). The brown print did >> than yellow. Have swapped the funnels to see if its bottle or funnel. For the next revision, going to make the tip pointier (they seem to be able to walk out easily), put some holes in the lower tip to let the vinegar scent escape more easily and make the entry wider - might need a parabolic funnel rather than cylinder...

First model the container to get a sense of proportions

#openscad

In other #fruitfly news... just wow https://www.nytimes.com/2026/09/15/technology/fruit-fly-brain-map-google.html?unlocked_article_code=1.CVE.DSdT.aQCEZluACsZ5&smid=url-share

We made a dust extraction adapter to connect the DeWalt DCS7485 table saw to the Parkside PASA 1200 B2 workshop vacuum. The Printables upload also includes the parametric OpenSCAD file, so you can adjust the diameters, tolerances or length for your own setup.

https://www.printables.com/model/1846031-dewalt-dcs7485-to-parkside-pasa-1200-b2-vacuum-ada

#3DPrinting #OpenSCAD #DeWalt #Parkside #Woodworking #printables #diy #maker #workshop

I may need to update the examples but I dropped some here last year.

https://codeberg.org/raster/OpenSCAD/src/commit/224769d1694c862ce8b4d3fa96c19d8a14ccb38d/Cookie%20Cutters

#3DPrinting #OpenSCAD #cookies

294 holes punched, apologies to my downstairs neighbour. Now for some gluing and stitching. #leatherwork

It's a self designed ( #openscad ) phone flip case, #lasercut pieces, but the stitches are just marked then hand punched. Prevents charred holes discolouring the stitching.

All hollow Platonic solids implemented. (I'll have to rewrite the dodecahedron later, though.)

Source code: https://codeberg.org/qalle/openscad-solids/src/branch/main/wireframe-solids.scad

#OpenSCAD

ModelRift's blog serves up an epic showdown between #CadQuery and #OpenSCAD for AI-generated gizmos 🦾. Spoiler: both fail spectacularly, but with different flavors of disappointment 🚫🤖. Just what the CAD world needed—more ways to mess up 3D printing 🙄.
https://modelrift.com/blog/cadquery-vs-openscad/ #ModelRift #3Dprinting #AIgenerated #gizmofail #HackerNews #ngated

Benchmark: CadQuery vs. OpenSCAD for agentic CAD work

https://modelrift.com/blog/cadquery-vs-openscad/

Comments: https://news.ycombinator.com/item?id=49676577

#HackerNews #CadQuery #OpenSCAD #CAD #Benchmarking #3DPrinting #DesignTools

How come #KiCad doesn't have 3D models for single pogo pins!?

It's so simple really… It's just, it's 3am here, you know… 😫

#OpenSCAD #electronics

There's now a dodecahedron too (100 vertices and 90 convex faces). The thickness of the edges can be adjusted.

#OpenSCAD

@christopherkunz Maybe give #OpenSCAD a try. It's not design by point-and-click, more like programming, needs some visual thinking. Quick wins with combining 3D-primitives. Complex designs may be challenging. Since you're an IT guy, you may like its concepts. Deterministic results. Good companion with #LibreCAD.

I released this full set of Roadshow/Funhouse gears last year. I'm glad to see they are still in good shape after a year. I also have the original prototype that just has the middle gear and that's in one piece too.

Links:
Middle gear: https://www.printables.com/model/1226708-funhouse-road-show-animatronic-head-jaw-gear-03-84
Sector gear: https://www.printables.com/model/1241735-funhouse-road-show-animatronic-head-sector-gear-03

Middle gear was made with #openscad, the sector gear with #freecad, printed of PETG

#pinball #3dprinting

This hollow regular tetrahedron was difficult to get right, especially those inside corners. There are 20 vertices and 18 convex faces.

Source code: https://codeberg.org/qalle/openscad-solids/src/branch/main/wireframe-solids.scad

#OpenSCAD