I usually use charcoal blocks for soldering especially as some of my stuff needs quite high heat because of size. But even when I bind them, they don't last that long. I don't need to bed or carve stuff into blocks so I was wondering about the Silquar sheets: http://www.cooksongold.com/product_detail.jsp?add=W

Does anyone know if they are as heat reflective as charcoal and if they could possibly be cut down to make an oven type set up?