Hi, I expect others have bought Camden's relatively new book Ellie the Steam tram. I like the simplicity of this model locomotive but it is more 7/8" scale rather than the 16 mm scale I usually work in so I have decided to make a similar model albeit a little smaller. I have started with the boiler which I often do when making steam models. I had some 54 mm diameter (2.1/8") which is a little larger than the 50 mm suggested but instead of being 100 mm long it has been reduced to 80 mm long as this will significantly reduce the boilers water capacity a large steam dome will be fitted. Photograph list. Boiler barrel 80 mm long. A wooden plug was turned for the barrel. A very small shoulder was turned on the 28 mm diameter tube that will become the steam dome. A line was scribed along the barrel A length of paper was tapped around the barrel. The paper was cut through then folded in half and then half again then tapped back onto the boiler barrel and the fold lines used to make out the quarters of the barrel. The ends of the plugs had the quarters drawn on them. A step drill was used to start the hole for the steam dome. The barrel was mounted in the lathe and the hole turned to fit the dome. That is progress to date. Regards Tony.