I've probably mentioned this before in previous posts.
When I was about 9 years old my Grandad gave me this Mersey Models Steam Engine to play with. I remember him soldering up the ends of the brass boiler with a soldering iron heated in the coal fire before hand!

He knew what he was doing though, set the safety valve and gave me containers with marks on them to fill the boiler / spirit burner so that it wouldn't boil dry.
Anyway, I've been meaning to restore the model to pass on to my sons but as with everything, haven't got around to it. Then the other day my son had some homework to talk about a parents favorite toy from the past and their current favorite toy. I said, I can do better than that ... I'll show you it!
I was expecting to just get it out and fire it up to at least show him it working but no ... I must have previously damaged it and the safety valve bush had worked loose so I couldn't get it out.
I set about taking the end off the boiler, during which I also melted the solder around the bush for the steam outlet and whistle! I ended up re-soldering the other end off the boiler, cleaning up and soldering in the bushes back in with comsol (otherwise they kept re-melting and coming loose when I tried to solder the end) then the other end with normal soft solder.
During the process I decided to refrain from a complete restoration, only to leave it as it was as much as possible, clean / adjust the engine and make necessary repairs.
Here is the result - a pretty tired, well used looking engine but it works well! I was thinking rather than restore it, if I ever have the desire I could do a replica.

Nick
ps, Son watched it for about 1 minute then went back to watch Harry Potter

http://youtu.be/QyKfdsjFREI