An rpi file extension is related to the stereo lithography file format.
RPI file extension - Enhanced stereo lithography data
What is rpi file? How to open rpi files?
File type specification:
The rpi file extension is used for an uncommon enhanced stereo lithography file format. Instead of unordered triangles, this format uses facets, edges, faces and primitives such as cube, cylinder, cone, sphere and torus to describe a shape.
This rpi file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.
