STLsmith – AI Prompt → 3D Model Generator (SCAD/STL)

🚀 STLsmith v0.3.0 is a lightweight command-line tool that turns natural language prompts into 3D models you can slice and print. No CAD skills required.

How it works

Pricing Note: This template is priced at a $5 minimum so it’s accessible to everyone. The suggested value is $20. If you find value and want to support my mission of bringing AI tools to underserved regions, you’re welcome to pay more.

You type:

python3 stlsmith_cli.py "box 50x30x10 mm with four 3mm corner holes" --name plate

STLsmith generates:

cad/plate.scad (OpenSCAD file)

stl_exports/plate.stl (ready to print, if OpenSCAD is installed)

Logged design metadata in logs/stlsmith_log.jsonl

Supported designs

Box / Cube / Plate (custom width, depth, height)

Cylinder / Tube / Pipe (with diameter & height)

Sphere (with radius/diameter)

Holes:

Center bore (with 5mm center hole)

Corner holes (with four 3mm holes in the corners)

Grid patterns (with 3x5 holes diameter 2mm spacing 10mm)

Units: mm (default), cm, inches (" or in)

Why STLsmith?

Runs entirely offline – no cloud or API required

Works in Termux (Android), Linux, macOS, or Windows

Zero heavy dependencies (only Python + optional OpenSCAD)

Lightweight, reproducible, logged output

What you get

Full source (Python scripts)

INSTALL.txt – setup & usage guide

README.md – feature overview

LICENSE.txt – terms of use

Sample prompts & outputs

Who it’s for

Makers & 3D-printing hobbyists

Educators who want quick parametric parts for demos

Engineers who like fast prototyping without CAD overhead

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💡 Pro tip: add --stl to auto-render .stl (requires OpenSCAD CLI installed), or --png to generate preview images for your parts.