This plugin reads and displays files in STL (stereo lithography) format, the standard data format for automated fabricators. This format uses triangles exclusively to to represent 3-D geometry. More information can be found at

and at


Unused data
The STL specification dictates that the normal for each facet is to be stored with the vertex coordinates. Since this information is superfluous, it is ignored by the plugin.

ASCII and Binary STL Files
Currently, there is no support for the binary STL format. Only files in the ASCII format can be read.