| Neo,
That pic looks like a piece of 1/8" acrylic, center drilled, and the outer edge trimmed somehow, is that all it is? I could make something like that.....The rio is tired anyway, perhaps I may try it on that impeller. Actually, I think I have a replacement impeller anyway...I suppose that I would just have to be careful to keep it as balanced as possible. Did you make that piece in a lathe? | 
