Converting from STEP files to BRL-CAD databases
BRL-CAD's most pressing need in the geometry file conversion category is support for the STEP file format, a.k.a "STandard for the Exchange of Product model data." Step is a successor to the IGES file format and today is the major standard used for data exchange between CAD systems.
Defining ISO Documents
The source standard for STEP is ISO-10303, which consists of hundreds of individual parts. (list parts important to brlcad)
Existing Open Source Tools
NIST STEP Class Libraries