Homemade Roots Blower: Almost done with the design

All i need to do now is print out the drawings and cut a prototype out of plastic or some type of hardwood.

I think my next few posts will be the drawings/blueprints of the individual components. 

If I make this out of wood I would probably just print out the drawing, glue it onto a block of wood and jigsaw out the profile of the part.

If I am to use this as a supercharger as originally planned, this would need to be made out of aluminum at least... as I'm sure gasoline and wood does not mix well especially if I am trying to keep close tolerances on the wood.