One of the challenges with 3D printed bodies is their extreme lightness, especially in a scale which has previously got used to heavyweight white metal locomotive bodies.
So he has stuffed lead into every available orifice.
The only visible bits are these pieces you can see in the bunker, which has yet to be filled with coal.
Lead has also been fitted inside the side tanks and also stuffed into the smokebox and the front section of the boiler, which all helps with the weight distribution on a model which runs the risk of being tail-heavy.
The chassis we've test build for the developer has an very clever roller system above the bogie truck which provides excellent support and a smooth swing.
If you look carefully you'll also notice that the nuts to secure the motion have been fitted now, and Himself has also created a firebox piece to fit inside the cab.
The fixed rear coupling will need to be replaced with one that swings before it can haul anything around our tight curves going boiler-first, but visitors to the Troon show this weekend might catch a glimpse of it having a - rather improbable - test run around the Dduallt spiral.
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