>>>>>It seems like it would be an unusual option, have you seen it before in any other CAD program? I don't think that would normally be explicitly modeled in a CAD design.

No I have not seen it in a CAD program. It's like the age old newb modeler wanting to model the threads on a bolt. But then again, Danny did model Knurls on his camera!

I was just pointing out what a bead weld was, as you did ask. It could play into the artist side of MoI (Shouldnt Knurls be bump maps?)

The image I showed was just a normal G1 filet, inverted on it's own trim boundries. No consideration for tangency with surrounding geometry.