Ahh the first train I had 4MT(T) made by Hornby Doublo and on their 3 rail track and is still my favourite locomotive, I got my trainset as a hand-me-down from my father's brother, the 4MT tank was also the engine that pulled the passenger trains from our village up to Glasgow, Ah memories, thanks for sharing that

@Dart you can get little flat iron bits for your soldering iron for using on heat shrink film. For my small gas soldering iron it comes with a hot knife, hot air blower, pencil flame, as well as various sizes of soldering bits, been using that same soldering iron for 30+ years now, the hot air nozzle is great for heat-shrink tubing it uses a catalyst to burn the gas and produce the hot air rather than a direct flame.