Substitute brass for iron where ever you see it, as the model is built in brass, but the original is in iron, as also the look of the model will be when finished.
To build in iron is very simple, unlike timber, as the materials are already of the correct basic dimensions, thickness and shape, and there are only 3 of them, angle iron, plate, and bulb iron. The complications come in the working of them - with timber it is an adze, saw and boring tool for basics, and each piece is worked on i
Fig- 73 - I did mention some time back that if I were to build this again, then I would not start in the centre, but at one end and work out from there. It is at this stage that we see the reason why. Iron construction, consists of joining lengths of iron together, be it plate, bulb iron or angle iron, the lengths, other than for plate, being of about 40 feet long. The practice is that there is a minimum distance between these butt joins, in the main it is the distance of two frames, or 4 fee