Two-Part Mold Maker

🖨 3D Printing

Produce reusable master patterns or simple casting mold blocks with no paywall. 100% free STL exports, no subscription, and files stay in your browser.

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Cavity styleBlock width (mm)Block depth (mm)Cavity radius (mm)Block thickness (mm)Preview one half

Interactive 3D preview

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Preview is rendered locally; exports contain full-resolution geometry.

Building your design…

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The cavity halves are intended for suitable non-heated casting or silicone mold making; not certified for food safety, molten metal, hot resin, pressure molding, or injection molding. Mold halves require careful alignment and release planning. These are independent ToolsVault tools. STL dimensions are millimeters; test fit, slice, and inspect layers before printing. No cloud processing or paid exports.