I was talking to a long time friend today about soldering techniques. This came about because one of the products he sales has a stuff single core steel element wire and although I could solder to it, sometimes it took me a while. He showed me this:Flux dispenser pen. I've just tried one out for the first time, and although I've always thought I could solder a good joint the result and the ease of use is impressive. I just filled mine with Carrs Red label flux and when for it. Highly recommended, for ease of use and results.