Solder Block, Vermiculite
This lightweight block offers an ideal surface for all soldering tasks. Made from highly insulating and heat reflective vermiculite, the block offers temperature resistance up to 2,012°F (1,100°C) and stands up to direct flame without damage. This material contains no ceramic or asbestos; it does not create dust and is odorless and non-irritating. Though light in weight and strong, the material is easy to cut and shape using ordinary tools.