#OpenCascade
opencascade oh my god bruh
January 19, 2026 at 6:09 PM
My talk at #FOSDEM was accepted for the Open Hardware & CAD/CAM Devroom! "PostCAD: OpenCASCADE in the Database"

fosdem.org/2025/schedul...
FOSDEM 2025 - PostCAD: OpenCASCADE in the Database
fosdem.org
January 11, 2025 at 2:26 AM
FreeCAD 2025 Annual Report is out: strong growth across development, funding, and community efforts. For 2026, the focus shifts to stability, documentation, infrastructure, and sustained contributor support.

Read more:
blog.freecad.org/2026/04/24/2...

#FreeCAD #OpenSource #CAD #FPA #FOSS
2025 annual report and plans for 2026
The FreeCAD Project Association (FPA) has just published the 2025 annual report and plans for 2026. Here are the report’s highlights: Started actively working with the OpenCascade team (paid positi…
blog.freecad.org
April 27, 2026 at 6:09 AM
83 PRs merged this week. Units can now be changed on the fly, OpenCASCADE 8 support lands, and Sketcher label fonts are now configurable in Preferences plus a revamped Polyline tool.

blog.freecad.org/2026/05/20/wip-wednesday-20-may-2026/

#FreeCAD #WIPWednesday #CAD #OpenSource #OCCT
WIP Wednesday, 20 May 2026
This week in FreeCAD development: Draft Roy_043 fixed a regression (PR#30061) and an incorrect Autoupdate icon (PR#30063). ItSaulGoodMan fixed a bug where Trimex would not write the trim/extend res…
blog.freecad.org
May 21, 2026 at 11:36 AM
I'm anxiously awaiting #FOSDEM talk acceptance announcements! My proposal is titled "PostCAD: OpenCASCADE in the Database" pretalx.fosdem.org/fosdem-2025/...
PostCAD: OpenCASCADE in the Database FOSDEM 2025
OpenCASCADE is the elephant in the room. Let's enlist an elephant of our own, PostgreSQL! Learning from the geospatial ecosystem's PostGIS (a database extension that provides geospatial data types an...
pretalx.fosdem.org
December 8, 2024 at 10:56 PM
A new version of Open Cascade Technology (OCCT) 8.0 has been released. This geometric kernel forms the backbone of several projects such as #FreeCAD, #IfcOpenShell, or #KiCAD.

The release announcement is here: occt3d.com/occt3d-open-...

#OpenCascade #OCCT3D #OCCT #OpenSource
May 8, 2026 at 8:51 AM
hell yeah i’ve now got a basic cad library going powered by “opencascade technology”

does calculation with pure shapes,
can export those as eg STEP or render down to mesh with a specified tolerance and write STL

a bunch more foundation, convention and convenience to sort out

but promising
January 1, 2025 at 12:57 PM
"Port OpenCASCADE to Rust" would be a great LLM project for someone with sufficiently large budget...
July 2, 2026 at 12:49 PM
[ANN] Pharo OCCT is a Pharo/OpenCascade experiment for building and viewing CAD shapes from Smalltalk github.com/mor3245/phar...
July 2, 2026 at 11:23 AM
if you like openscad, definitely check out cadquery -- it uses the opencascade kernel, just like freecad
February 23, 2024 at 6:23 AM
(
Screenshots credits
- Desktop+ VR overlay github.com/elvissteinjr...
- "3D model visualization software" over OpenCascade
- Vault Engine github.com/Vault-Softwa...
- AIMation Studio aimation-studio.com
)
November 7, 2024 at 7:21 PM
SolveSpace still excels at being minimalist and polished (it will never use OpenCASCADE, for one), and it doesn't use rage-inducing GTK UI patterns, but other than that i can't think of reasons not to use Dune 3D instead
January 30, 2026 at 5:22 PM
🆕 GiD 18 brings broader 𝗖𝗔𝗗 𝗶𝗻𝘁𝗲𝗿𝗼𝗽𝗲𝗿𝗮𝗯𝗶𝗹𝗶𝘁𝘆 𝗮𝗻𝗱 𝘀𝗺𝗮𝗿𝘁𝗲𝗿 𝗴𝗲𝗼𝗺𝗲𝘁𝗿𝘆 𝘁𝗼𝗼𝗹𝘀:

✔️ OpenCASCADE integration, with BREP import and a new STEP reader
✔️ Closed-volume detection
✔️ Line-mesh preview and mesh-quality tools
✔️ Geometry reconstruction from volume meshes
September 21, 2026 at 8:35 AM
I should look back into it - tried zoo way back in the early days and immediately bounced off of it (at the time it was sort of miserable, although caveat it's been years now)

have no strong opinions about KCL vs openCASCADE, mostly I'm co-opting either of them anyway
July 8, 2026 at 7:42 PM
nope, but OpenCascade straight from c++ is quite nice!
January 16, 2025 at 4:41 AM
⏩ 𝗔𝗻𝗱 𝘄𝗵𝗮𝘁 𝗮𝗯𝗼𝘂𝘁 𝘁𝗵𝗲 𝗳𝘂𝘁𝘂𝗿𝗲?

The team is exploring deeper OpenCASCADE and VTK integration, GPU computation through Vulkan, multiple simulations in one project, synchronised post-processing and GiD as an MCP tool for AI agents.

▶️ Watch: youtu.be/xI5RWu-gzLA
[01/07/2026] GiD 18 Release: New Capabilities for Numerical Simulation
YouTube video by CIMNE MC
youtu.be
September 21, 2026 at 8:35 AM
Dmitrii Pasukhin gave a talk about news in #OpenCASCADE development. If you want to know more about the technology that projects like #FreeCAD, #KiCAD, or #IfcOpenShell are built on, you can watch the presentation from @fosdem.org here: fosdem.org/2026/schedul...

#OpenSource
February 7, 2026 at 4:35 PM
Tech deep dive: Chili3d uses OpenCascade compiled to WebAssembly. Discussion highlights challenges with limited open-source geometry kernels (OpenCascade, CGAL, BRL-CAD) and the complexity of handling 3D geometry corner cases. #WebAssembly 3/6
June 11, 2025 at 8:00 PM
"It achieves near-native performance by compiling OpenCascade (OCCT) to WebAssembly" – c'est bon ça !
June 14, 2025 at 6:52 AM
if you're into python at all, cadquery is worth a look -- it's freecad under the hood (or, rather, opencascade, which is freecad's kernel) but it's entirely programmatic

also has a nice UI
January 22, 2024 at 10:50 PM
AI works best when building right on top of open source libraries, but you can mix and match. In a day I can create web apps using React, MUI, Vite, Emscripten, and OpenCascade (for example). This would be much more time consuming to do by hand.
February 12, 2025 at 9:28 PM
Could you be the one to help FreeCAD become the best open-source professional CAD tool?

blog.freecad.org/2025/03/02/n...
New contracts at FPA
The FreeCAD project association has filled three previously announced developer-support roles: Pieter Hijma will take the role of OpenCASCADE Liaison. He will coordinate bug reports and patches wit…
blog.freecad.org
March 2, 2025 at 10:22 PM
Nice, well the build123d source code could be helpful if you need to understand the quite complex API of OpenCascade!
January 16, 2025 at 2:59 PM
look up opencascade.js for step in particular. it wraps c++ opencascade and is what my STEP rendering uses (converts STEP to a format i can render natively in rust).
August 8, 2026 at 7:42 PM