Split, scale, and transform STL files with precision face selection and normal control. Visualize face normals, flip orientations, rotate selected faces, and organize your 3D models. Perfect for OpenFOAM mesh preparation, 3D printing, and CAD workflows.
Professional tools for working with STL files
Merge multiple STL files into one unified 3D model
Convert STL files from ASCII to compact binary format
Everything you need to work with STL files efficiently
Interactive viewer with precision face selection and visual controls
Extract and organize solid objects into separate files
Export individual files or download all as a zip archive
Resize your 3D models with precise scaling operations
Visualize face normals with interactive 3D arrows
Flip and rotate individual faces with precision
Advanced topology analysis to identify mesh quality issues
Detect holes and boundary edges in your 3D meshes
Designed for engineers, researchers, and makers
Prepare STL files for CFD simulations by separating different boundary surfaces and controlling face orientations. Visualize and flip normals to ensure correct boundary conditions, rotate patches to match flow directions, and organize surfaces for snappyHexMesh processing.
Split complex 3D models into separate components, scale models to fit printer beds, and control surface orientations. Visualize normals to check face directions, flip surfaces for proper support, and rotate parts for optimal printing orientation.
Validate exported STL files from CAD software and control face orientations for analysis. Visualize normals to verify surface directions, fix orientation issues by flipping faces, and prepare geometry for FEA and CFD preprocessing workflows.