I don't believe I can explain transferring information from CAD to the workshop situation any better to you than I have. I'm not quite sure, in the absence of linking CAD to CNC equipment, how working with CAD generated drawings differs from working with drawings developed on a parallel motion drawing board, or similar. In both cases, assuming the drawings are good, the key information is there to make whatever has to be made. If that includes the use of rods to aid construction it's worthwhile producing them.So far nobody has quite explained how, in a small workshop, you get from CAD to marking up your workpiece, except
Sgian Dubh but he only goes part of the way
Not every job needs rods and I've made many a piece without one. Sometimes, as I've described already, a rod can be useful for part of a construction but not necessary for every aspect of a job, e.g., making drawers where the assembled carcase becomes the target size for the drawer: the carcase itself becomes, if you like, the rod.
Maybe the problem is that I just don't quite get what it is you're trying to establish, and perhaps that's related to our different backgrounds, training, custom and practices we've experienced in our different but closely related industries. Sorry if I'm falling short in trying to make myself understood. I guess I'll have to give up trying for clarity and revert to being an observer of this interesting thread. Slainte.