Convert stl to 3mf

Download and install the latest version of Filestar.
Right click on one or more Stl file(s) on your desktop and select Convert with Filestar.
Type convert to 3mf in the search box.
Press Convert.

Or let an AI agent do it: filestarcli -i file.stl -c "convert to 3mf" (how).

Let your AI agent convert STL to 3MF

Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.

Install Filestar and add it to your agents:

npm install -g filestar
filestarcli agent install

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the STL files in my Downloads folder to 3MF”

Or run it yourself:

filestarcli -i file.stl -c "convert to 3mf"

Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.

Can my AI agent convert STL to 3MF?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.stl -c "convert to 3mf" on your computer, so your files stay on it.

Using Filestar With AI Agents · Download SKILL.md

What is the difference between .stl and .3mf?

Name: Stereolithography; 3D Manufacturing Format
Extension: .stl; .3mf
Category: 3D; 3D
Developer: 3D Systems; 3MF Consortium
Description: Stl is the standard 3D data transmission file format mainly used for 3D printing. STL contains surface geometry descriptions of 3D objects and it uses a series of triangles to describe the surface geometry of a 3D model.; 3mf is an additive manufacturing XML-based file format. 3mf files hold data on color, material, and all other details that can't be stored in the STL format.
MIME Type: application/vnd.ms-pki.stl; application/vnd.ms-package.3dmanufacturing-3dmodel+xml
Sample: sample.3mf
Wikipedia: .stl on Wikipedia; .3mf on Wikipedia

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