Just thought I would put in my 2 cents on a subject which maybe newbies would be interested. While constructing my Nscale layout I was having considerable difficulty with soldering the railjoiners. I seems I just could not get the rail to heat up fast enough to melt the solder. By the time the solder melted,the plastic ties were also. I had almost finished laying the track before I discovered the problem. A film develops on the tip of the soldering iron which appears to act as an insulator. The solution in my case was to use a piece of sandpaper to clean the tip before soldering each joint. The results were AMAZING! After cleaning the tip, it only took a few second to solder each joint. The point is, when soldering make sure your iron tip is CLEAN!