I don't know this method. It might be possible, but I haven't tried it yet.
But if you simply want a proportional 3x3x6, then I can tell you another method you can use.
It involves a Witeden Super 3x3x3 and a C4U 3x3x4.
You add the "Super" mech onto the 3x3x4, and add cubies to those circles.
I hope that makes sense

_________________
Tony Fisher wrote:
I believe it would work best with black plastic.
My puzzles in the Museum
My Website
My Youtube Channel