3D Print Toolbox v1.3.0 for Blender

3D Print Toolbox v1.3.0 for Blender

Blender 4.3 - 5.0

The 3D Print Toolbox for Blender is an essential extension designed to bridge the gap between creative 3D modeling and the technical rigors of additive manufacturing. Whether you are a hobbyist working with a home FDM printer or a professional preparing files for industrial SLS services, this utility provides a comprehensive suite of tools to ensure your meshes are "watertight" and ready for any slicing software. By automating the detection of common geometry errors that lead to failed prints, the toolbox saves hours of manual troubleshooting and wasted material.

The core of the extension lies in its advanced Analysis panel. With a single click, users can scan their models for non-manifold edges—the primary culprit of slicing errors—where geometry is not properly closed or shared by too many faces. The toolbox also identifies "degenerate" geometry, such as faces with zero area or edges with zero length, which can confuse printer paths. Advanced checks for wall thickness and sharp edges help prevent structural instabilities, while the overhang analysis highlights areas that will require support structures, allowing you to optimize your model's orientation before even opening a slicer.
Beyond simple diagnostics, the extension offers powerful Clean Up and Transformation capabilities. The "Make Manifold" feature attempts to automatically repair holes and flip incorrect normals, streamlining the preparation process. Unique to this toolbox is the "Scale To" functionality, which allows users to resize their models based on specific physical constraints, such as a maximum volume in cubic centimeters or exact bounding box dimensions. This ensures your final product fits perfectly on your print bed every time.