Thank you all.
Jason, yes I also have an old Ks white metal kit of a NE brake van I think it is, which I shall have a go on first and note the previous comments on the solder. Getting in and out quick was something dealt with on the course I attended, which was at the MRC and some time ago.
I have seen advertised by Squires a "Antex Energy Regulator". I believe this acts like a dimmer switch. Does anyone think this would be worth investing in? I know it is not the same as a temperature controlled soldering station. But as you know quality, Antex, Weller, et al stations are expensive and I am not sure I would hardly use it.
Ali