... my simple jig for holding the rails in a Vee shape whilst being soldered. My 25 watt iron has to be very hot as the aluminium strip acts as a heat sink The strip is easily bought from a local DIY store and its 10 x 2 mm I guess a more ingenious person could invent an adjustable one, but the chocks have to be the correct size. These jigs can be made from sleeper strip (ply or copperclad) or even thick card, for 4 mm scale 1.06 copperclad strip is fine Attachment: attach_2174_2781_91.JPG 903 posted: 17 Nov 2015 12:19 from: Nigel Brown Jim Guthrie wrote: Another method which works very well is to dip the hot iron tip into Carrs 188 solder paint when you get an almost instant tinned tip. A similar idea; if you can get a blob of solder to attach to the tip, just dunk quickly in 188 flux. I find the wet sponge method works fine. I use it before and after every single application of the iron; it becomes automatic after a time. The ...