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STL Filter – 3D Print Check
The STL Filter is a feature within TurboCAD, a leading CAD software, that allows users to export their designs in STL format, which is the standard file type used in 3D printing. But it's not just about file conversion; the STL Filter also performs a crucial '3D Print Check' to ensure that the design is ready for printing.
3D Print Check: Ensuring Topological Integrity
When exporting an STL file, the 3D Print Check option is a game-changer. It examines the part for common topological errors that could hinder the printing process. These include:
- Non-manifold edges
- Duplicate facets
- Collapsed facets
- Consistent normal orientation
- Open edges
- Shells
By identifying these issues before printing, the STL Filter saves time and resources, reducing the likelihood of print failures.
When saving an STL file, the user is given the option of performing a print check on the 3D model:

Geometry Information at a Glance
In addition to error checking, the STL Filter provides valuable geometry information about the 3D model, such as:
- Extents
- Number of facets/vertices
- Area
- Volume
This data is crucial for understanding the physical characteristics of the object to be printed and for making any necessary adjustments to the design.
User-Friendly Interface
TurboCAD's user interface for the STL Filter is designed with simplicity in mind. After saving the STL file, a dialog appears for each object, giving general information and the results of the 3D print tests. This immediate feedback allows users to make quick decisions about their designs.

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