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Coding · Intermediate

# Writing parametric CAD models from dimensions

Convert mechanical specifications into programmatic 3D CAD scripts with parameterized dimensions.

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Opens BotBento. Paste the prompt into a bot; nothing is preconfigured.

- When you askReceive dimension specs
- ThenDraft parametric script
- ResultPropose CAD code update

Translate dimensioned sketches, technical specs, and feature requirements into parametric CAD code. The bot drafts modular geometry scripts, adds fillets and pattern transforms, and formats code for preview in your CAD viewer.

## Prompt to start with

BotBentoRecommended

```
When provided with mechanical dimensions or feature requests, write procedural geometry scripts that parameterize key measurements. Verify geometry logic, then propose script additions or updates. Ask for confirmation before committing changes or overwriting existing CAD script files in the repository.
```

Copy

## Tools it uses

GitHubNotesTerminal

## Works with

BotBento

## Tags

- cad
- 3d-modeling
- javascript
- parametric
- engineering

## Source

[Show HN: FluidCAD – Parametric CAD with JavaScript](https://news.ycombinator.com/item?id=47721997)
Hacker News · checked 2026-10-16

Summarized in our own words. Any results described there are the authors’ own, not measured by BotBento.

By BotBento Editorial · Added 2026-10-16 · Updated 2026-10-16 · [Suggest a correction](/contact/)

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