Months back, I posted up a video of rock melting in a lab..

well, now... a teenager has managed to replicate it with cheap materials =x



"... I drilled a small hole in the dish and glued a piece of PVC pipe on the back... Light shines through the hole and hits the translucent plastic on the end of the pipe. All I had to do was aim the dish once and mark the spot... As long as the target doesn’t conduct heat away too fast it will melt or vaporize just about anything eventually... I have vaporized before carbon, which occurs above 6,500 Fahrenheit (~3593.33 °C)... "