I've been thinking about doing some casting or just plain old melting and I really don't want to pay for fuel or have a big bonfire going. I built a frame for a Fresnel lens and am ready to go. Of course now the forecast is for cloudy days for the next week. I'm thinking that unless I do just a handful of material at a time the lens couldn't do it since you have to really focus the light to a small point. I guess that I'll have to build an array of them to cover a larger area. Ok people in Pittsburgh, put out your old rear projection tvs for trash tonight!