Access: Click the or icon, or select File / Import / From File or File / Export / To File from the main menu. The Import or export dialog is displayed. Select STL Files from the Files of Type field.

STL (Stereo-lithography tessellation language) refers to the representation of 3D forms as boundary representation solid models constructed entirely of triangular facets. The STL format was developed for use in rapid prototyping machines including Stereolithography apparatus (SLA).

A Stereolithography Apparatus (SLA) machine builds physical models by focusing an ultraviolet light onto the surface of a container filled with liquid photopolymer. The light beam draws each layer of an object onto the surface of the liquid. At every place that the beam strikes the surface, the liquid changes to solid. 3D parts are thus built from the bottom up, one layer at a time. When the part is finished, it is exposed to ultraviolet light for curing.

Click the icon, or select File / Import from the main menu. The Import dialog is displayed. Select STL Files from the Files of Type field.

See STL Import.

Click the icon, or select File / Export from the main menu. The Export dialog is displayed. Select STL Files from the Files of Type field.

See STL Export.