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How to design a printable hose adapter from a text description with Nurb

Describe a part in plain words, let the AI model it, and export a 3MF ready for your slicer.

Who it is forA woodworker or shop owner who needs a custom fitting that no store sells, and has no CAD experience.

The problemMeasuring, modelling, and checking a custom fitting by hand in CAD software takes time and skill most hobbyists do not have.

The outcomeA checked, sliders-adjustable part in a live viewer, exported as a 3MF with print settings already embedded.

What you need first

  • An AI subscription you already pay for, such as one that works with your agent or terminal
  • A Mac (the app is provided for Apple silicon and Intel) or a terminal with uv or pip available
  • A 3D printer and a slicer such as OrcaSlicer or Bambu Studio, if you want print time and filament estimates

Steps

  1. Install Nurb with curl -fsSL https://nurb.dev/install.sh | sh, or download the Mac app from the README install section.
  2. Open the Nurb app, or start your AI agent in a terminal.
  3. Tell the AI what you need, for example: Make an adapter that connects my shop vac hose to the dust port on my table saw.
  4. Wait while the AI models the part, runs the printability checks, and opens the live viewer.
  5. Drag the sliders if you want changes, then click 3mf and print.

Prompt for your agent

Using the nurb repo (Shpigford/nurb), install it and build a part for <target part description>. Expected output: a live viewer showing the part and a 3MF export. Verify by running `nurb check` and confirming it reports the findings for that part.

Caveat. Nurb's own README says that the AI cannot see the part, so you still need to judge the fit on the real object before relying on it.

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