STL Analysis
Information about STL analysis (tap briefly to open)
STL analysis – check mesh quality online
This tool analyses STL meshes for typical quality and geometry issues before 3D printing, CAM processing or simulation.
The STL file is analysed server-side and automatically deleted after processing.
What is STL analysis used for?
An error-free mesh structure is essential for many engineering applications.
Typical use cases:
- 3D printing and additive manufacturing
- CAM and CNC processes
- Simulation and FEA
- Mesh quality control
- Preparing engineering 3D models
Defective meshes can cause problems in printing, simulation or manufacturing.
Which properties are checked?
The analysis checks various geometric and topological properties of the STL model:
- Non-manifold Edges
- open edges and holes
- Watertight status of the mesh
- Self-intersections
- Mesh consistency and topology
This enables typical issues to be detected early.
How does STL analysis work?
- Upload STL file
- Analyse mesh geometry
- Check topology and surfaces
- Detect errors and anomalies
- Show analysis results
Technologies used
Open-source technologies and Python libraries are used for the analysis:
- trimesh
- Python
- optional rtree and scipy extensions
Current limitations
- Current maximum file size is 80 MB per STL file
- The analysis is performed server-side
- Very complex meshes may take longer to process
- Some checks require additional Python extensions
Checks
- Non-manifold edges (topology)
- Holes / open boundary edges
- Watertight (closed volume)
- Self intersections