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How to design a printable case from a plain description with SOMA

Describe a case or bracket in words and get a CadQuery model you can check and export for printing.

Who it is forA maker who needs a case, bracket or mount for a project and does not want to learn a CAD program.

The problemBuilding a printable part in a traditional CAD program takes hours of learning and modeling.

The outcomeA checked 3D model of the part, exported as STL or 3MF and ready to print.

What you need first

  • Windows, Linux, or macOS (Apple Silicon) with a SOMA package downloaded from somacad.app/download or the releases page
  • A CLI agent such as Claude Code, OpenCode, Codex CLI or Gemini CLI, installed and logged in by you
  • About 1 GB of free disk space for the installed app

Steps

  1. Download the SOMA package for your system from somacad.app/download and install it.
  2. Install and log in to a CLI agent such as Claude Code, Codex CLI or Gemini CLI.
  3. Start SOMA, click New model, then start your agent with the + above the terminal.
  4. Describe the part, its size and the printing material, then click parts or measure in the view and send feedback to the agent.
  5. Export the finished model from the menu as STL or 3MF.

Prompt for your agent

In the SOMA model folder for <model name>, write a CadQuery model for <part description> in the model file, then run `soma build` to rebuild it. Report the final overall dimensions in millimeters and confirm the build finishes without errors.

Caveat. SOMA is an early prototype, mainly tested on Windows, so expect rough edges on other systems.

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