Stephen,
I cast several resin engines before assembling the brass one. I used the individual brass parts as masters. I cast the silicone molds then pressure cast the parts for ultimate detail. I do have only four more "kits" available., and they are pricey by some peoples standards. These were intended for my own use but are available to those who appreciate and respect the quality of the work. Follow the link below to view the results of Martin Wolf's build. He did an excellent job of building and painting and his own embellishments. He came back and also had me do the prop for him.
Have a great day! Enjoy!
Ken
http://www.wwi-models.org/Images/Wol...iii/index.html