Here is a functional 6" diameter steam whistle bowl. All it needs is final machining for threads and final steam passageways to work.

This is a reproduction steam whistle bell. It just needs machining for a stud in the hole and it should be able to blow. It should also sound similar to a N&W hooter whistle.

Here is a functional 6" diameter steam whistle bowl. All it needs is final machining for threads and final steam passageways to work.

If the modeling is correct, this should be a perfectly functional Norfolk & Western steam whistle bell, like those used on the A and Y series of locomotives. All it should require is to drill and tap the whistle to accept a stud to match whatever bowl you use.