These use the same milled design, but they are a larger knob and do not have the undercut in the back. And yes, that is possible. You want them still the same color but different shades due to the polishing right? Not plain polished aluminum, because I can't exactly have one are unanodized, and on anodized.
That would be cool to implement shades into it or to have say a blue host and blue focus ring (any color), with the circles in the focus ring and the inside of the host fins (or the outside), bare metal
I have never worked with a metal lathe or anodizing processes, so I don't know what is possible. I thought that if something was coated, then specific parts could be buffed out to bare metal afterwards.
Yes, it most definitely is possible, but it is very delicate work. If you were to chuck it back up to use a tool to turn off the anodizing, you risk marring up the part, plus it has to be aligned perfectly. If you were doing it by hand, one slip, and you need to start over. So it is possible, it'd just be costly. For the heatsink fins though, we may be able to mask those when anodizing.
That would be fairly difficult because the way I plan of fixturing it, it wouldn't have the back cut off yet. (The piece I use is longer than what the finished piece ends up being, there is some waste, but it makes the process easier and has better results.)
Also, I need a name for this if anyone has any suggestions... I'm not good at naming things.