Orifice for spinning wheel

UPDATE 2/10/17: A new STL is available! I finally got around to designing the hole into the "orifice" part. I have not test printed this yet, but I imagine that it will still need some light heat work to smooth out the inside of the hole (to avoid catching wool fibers).

This is my design for a spinning wheel orifice. It is not drilled but has an indicator center mark. I recommend pilot drilling at 10 degrees from vertical, then final drilling with a 5/16" bit. Heat polish to keep the wool fib