Back at this project after working on other things through the spring and summer.
I received a test print of the feedwater heater pump and cab signal box from Shapeways. It could use some more tweaking and details, but as this part just screws in where the original air pump was located I can move forward without the final version. I had a terrible experience with Shapeways on this part, and I'm looking for a new 3D printing service.
Front fireman's side showing piping down from the feedwater heater, and the air pumps and air pump shield painted and mounted on the pilot:
Test print of the pump and cab signal box:
Roughed in rear fireman's side piping, replacing the injector pump that the stock model had here:
~Chris