I wanted to build my own silver soldered copper boiler, however there's one part of the boiler I'm unsure about and thats the fitting of the sight glass for the water level. This picture shows the PPS Steam Models aftermarket boiler fitted to a little mamod loco: The fitting of the sight glass seems a real Heath Robinson affair, I was trying to figure out if this could be done a little neater, without so much silver soldering and odd bits of pipe! It seems it could prove to be a little awkward to align all the bits whilst soldering it up. Any ideas of how this is achieved on other small boilers? I think this is the first time that Mamod and the word "Scale" have ever appeared together!