A new edition of “The Key to Metal Bumping” is now available from Martin Tool & Forge (Fort Worth, TX). The book has been used since its first edition, published in 1939, as a work of reference in technical schools and professional shops. By maintaining close relationships with professionals in the field, Martin Tool & Forge has developed new technologies and updates to its long-running publication. It can be found wherever Martin products are sold.

Visit www.martintools.net for more information.