Very cool. You didn't use Knobman, then? Thanks for sharing your work and setting the record straight regarding the feasability, Youn. A world of possibilities awaits now for the mixer.
What I like about those kind of faders like the one you created is that the trail it leaves make it clearer to visually measure the volume gradation.
I found this, which is a different style, but shows in another way how creative faders can be.
