STL Splitter — Free Online 3D Model Splitting Tool

Split large STL, 3MF, and OBJ files into printable pieces that fit your 3D printer bed. Completely free, runs in your browser, and your files never leave your device.

Key Features

• Free & Private — No data leaves your browser. All processing happens locally on your device.
• Browser-Based — No downloads or installations needed. Works on any modern browser.
• 44+ Printer Presets — One-click setup for popular printers from Creality, Prusa, Bambu Lab, and more.
• Professional Results — Precise cuts with watertight cap generation for clean, printable pieces.
• Connector Pins — Add circular or pentagon connector pins for easy piece alignment and assembly.

How It Works

1. Upload Your Model — Drag and drop your STL, 3MF, or OBJ file (up to 200MB).
2. Set Cuts — Choose your printer or set custom bed dimensions. Add manual cuts or use auto-split.
3. Download Pieces — Download individual pieces or grab them all as a ZIP file.

Perfect For

• Cosplay Props — Split helmets, armor, and oversized props to fit your printer bed.
• Home Decor — Print large vases, sculptures, and decorative pieces in sections.
• Gaming & Miniatures — Split terrain, buildings, and large-scale gaming accessories.
• Engineering — Prototype large mechanical parts and architectural models.

Supported File Formats

STL (binary and ASCII), 3MF, and OBJ — the most common formats used in 3D printing and modeling.