I teach Product Design Engineering at Ohio State and I can honestly say that Bralla is absolutely the best single reference for working designers and manufacturing engineers that I've found. An incredible compendium of useful info on just about any manufacturing process you can think of, and plenty you HAVEN'T thought of, plus chapters on Design for Assembly, materials, economic considerations - you name it. The book is a bit pricey, but considering the amount of useful information packed into it, it's a steal. Bralla far exceeds McGraw-Hill's regrettably low standards for their handbooks - this one is a keeper!