# gumyr/build123d

> A Python parametric BREP CAD modeling library built on the Open Cascade kernel, letting you define 2D and 3D models as code for 3D printing, CNC machining and laser cutting.

- Magnitude: 1.8 out of 10 — Steady
- Stars: 3,306 total · +0 stars measured 2026-10-05, 10:59–11:53 UTC, ≈ 4 by evening
- Star trust: star growth looks organic
- Category: Hardware, IoT & robotics · Language: Python · License: Apache-2.0 · Created: 2022-07-05 · Last push: 2026-10-04
- GitHub: https://github.com/gumyr/build123d · Page: https://gitnova.dev/en/r/gumyr/build123d

## Useful for

- Generate a parametric 3D part model with a Python script for 3D printing
- Build a model from primitives using algebraic operators and export it to FreeCAD or SolidWorks
- Automate building a series of parts with varying dimensions via parametric classes

## Why it’s here

- Star-counter measurements on 2026-10-05 (UTC), 10:59–11:53: 3306 → 3306 stars (+0). This is the change over that interval.
- Estimated end-of-day forecast: about +4 stars, using observed gains and the previous day.
- Over the last two days the pace is 1.7× that of the previous week and a half.
- GitHub Trending Python today: #13, +20 stars.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 294
- Issues and pull requests: 1,404
- Watchers: 38
- Average over the last week: 12 per day
- Usual pace: 8 per day
- Stars in the last hour (measured): 0
- Latest release: v0.13.0 (2026-09-21)

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-09-06 … 2026-10-05: 11, 11, 11, 13, 12, 9, 3, 7, 7, 11, 16, 4, 14, 7, 8, 9, 11, 7, 5, 9, 4, 7, 8, 8, 8, 6, 5, 33, 20, 0

## Spotted in now

- GitHub Trending Python today: #13, +20 stars

## Similar by description

1. **FreeCAD/FreeCAD** — 2.1 · Steady · Games & graphics · C++ · +9 stars measured 2026-10-05, 00:10–12:39 UTC, ≈ 18 by evening
   Open-source cross-platform parametric 3D modeler for designing real-life objects, from parts and mechanisms to architecture and BIM. It lets you modify a design via parameters in its model history and produce drawings from 3D.
   Full card: https://gitnova.dev/en/r/FreeCAD/FreeCAD.md

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-10-05 12:40 UTC, updated every 30 minutes.