3DP MCP Server

MCP server that gives Claude the ability to create 3D-printable CAD models using build123d. Outputs STL/STEP files ready for slicing in Bambu Studio.

Quick Setup

macOS

git clone https://github.com/yourusername/3dp-mcp-server.git
cd 3dp-mcp-server
bash setup.sh

Windows 11

Option A — Double-click setup.bat in File Explorer.

Option B — Run from PowerShell:

git clone https://github.com/yourusername/3dp-mcp-server.git
cd 3dp-mcp-server
powershell -ExecutionPolicy Bypass -File setup.ps1

That's it. Start a new Claude Code session and ask it to create a model.

Tools (33)

Core

| Tool | Description | |------|-------------| | create_model | Execute build123d code, auto-exports STL + STEP | | export_model | Export to STL, STEP, or 3MF | | measure_model | Bounding box, volume, face/edge counts | | analyze_printability | Watertight check, thin wall detection, build volume fit | | list_models | List all models in current session | | get_model_code | Retrieve the code used to create a model |

Transform & Combine

| Tool | Description | |------|-------------| | transform_model | Scale, rotate, mirror, or translate a model | | combine_models | Boolean union, subtract, or intersect two models | | import_model | Import STL or STEP file from disk |

Modification

| Tool | Description | |------|-------------| | shell_model | Hollow out a model with optional open faces | | split_model | Split a model along a plane | | add_text | Emboss or deboss text onto a model face | | create_threaded_hole | Add threaded or heat-set insert holes (M2–M10) |

Analysis & Export

| Tool | Description | |------|-------------| | estimate_print | Estimate filament usage, weight, and cost | | analyze_overhangs | Find overhang faces needing support material | | suggest_orientation | Suggest optimal print orientation | | section_view | Generate 2D cross-section as SVG | | export_drawing | Multi-view 2D technical drawing as SVG | | split_model_by_color | Split into separate STLs for multi-color printing |

Utility

| Tool | Description | |------|-------------| | shrinkage_compensation | Scale model to compensate for material shrinkage | | pack_models | Arrange models on build plate for batch printing | | convert_format | Convert between STL, STEP, 3MF, BREP |

Parametric Components

| Tool | Description | |------|-------------| | create_enclosure | Electronics enclosure with snap/screw lid and features | | create_gear | Involute spur gear (via bd_warehouse) | | create_snap_fit | Cantilever snap-fit joints | | create_hinge | Two-part pin hinge assembly | | create_dovetail | Male or female dovetail joints | | generate_label | 3D-printable label with text and optional QR code |

Community

| Tool | Description | |------|-------------| | search_models | Search Thingiverse for 3D models |

Publishing

| Tool | Description | |------|-------------| | publish_github_release | Upload STL/STEP to GitHub Releases (via gh CLI or API) | | publish_thingiverse | Create a Thing and upload STL to Thingiverse | | publish_myminifactory | Create object and upload STL to MyMiniFactory | | publish_cults3d | Create listing on Cults3D via GraphQL API |

Requirements

• Python 3.11+
• macOS (tested on Apple Silicon) or Windows 11
• Claude Code CLI

Uninstall

macOS

claude mcp remove 3dp-mcp-server -s user
rm -rf 3dp-mcp-server

Windows

claude mcp remove 3dp-mcp-server -s user
Remove-Item -Recurse -Force 3dp-mcp-server

License

This project is licensed under CC BY-NC-ND 4.0. You can use it personally and share it with attribution, but commercial use and redistribution of modified versions are not permitted.

Interested in collaborating or commercial licensing? Open an issue to get in touch.