In the design phase of an aircraft, component positions and locations are continually in flux leading to a lag in models of line routing. Typically when lines are received from an aircraft manufacturer to the vulnerability analyst, they may not terminate at the component(s) they were meant to connect to. Therefore, when importing these lines from high-end CAD packages such as Catia or Pro-E into BRL-CAD, they need to be re-routed so that they reflect the aircraft systems accurately and eliminate any overlapping issues. Currently these lines are imported using an intermediate format such as STL, which is a facetted geometry. In BRL-CAD this becomes a "Bag-of-triangles" (BoT) solid which cannot be edited with any efficiency. It is very desirable to be able to import these lines using BRL-CAD native geometry via the pipe solid. I would someone familiar with CAD to assist me in explaning how the converter works and how it could be done. I can do the coding its just understanding the problem generally here.