Here Steve Chastain, author of a good number of the foundry books here, gives very detailed instructions for building a sand muller, or mixer - an indispensable piece of equipment for anyone seriously casting metal, as it makes light of mixing sand for molding boxes, or for cores. And the beauty of this is that the plans can be scaled up or down to make a small muller just for core sand, or a 42-inch one from a 500 gallon tank; everything you need to know is right here in this 96 page book, crammed with drawing, photos, tables and the like. Paperback. Published by the author.