I have a model created by someone else of an extension spring. It is comprised of a circular "section" (that is the wire dia), swept over the "path" which has five parts: start loop, start transition, helix, end transition, and end loop. The helix is defined by 'height' and 'revolution'...
I have a part that is 6061-T6 Al w/ Type II Black Anodize. A good part of the anodized surface (one large continuous area, no specific pattern or shape) is either a SLIGHTLY lighter shade of black, or less glossy, hard to tell. Thought it was residue, but nothing seems to take it off - DI...
