I was thinking about finding a new, more effective way of using a magnifying glass for tender ignition. I came up with an idea to use a thin piece of copper in the center of the bundle as a focus point for the glass. The piece of copper is about 1/32" thick and about 1/3" diameter, with a whole in the edge. The idea is to put a wire lanyard through the hole, which will extend down through the tender bundle and held between the fingers of the hand holding the bundle. Focus the beam on the blackened copper to heat it enough to light the tender surrounding it. I tried it with a small 5 power lens and had no luck. Then I tried it with a 6 inch five power lens and got the copper hot enough to melt solder. I plan on further experimentation with this system. The idea is to enable solar powered ignition during intermittent cloud cover. The theory is that the copper will retain enough heat, so I don't have to keep starting over. Also, in my experience a magnifying lens tends to burn a hole through the tender, without really igniting it. This copper may provide a heat absorber, witch could increase the ignition potential of marginal tender. Let me hear your thoughts on this. BTW, the wire lanyard is to allow retrieval of the piece of copper after the tender bundle is ignited.