here), and I think that's a great one for beginners and anyone casually interested in altering patterns to make their own designs. But if you ever find yourself making patterns for professional purposes, you will probably want a more comprehensive and technical book. That's where Patternmaking for Fashion Design by Helen Joseph-Armstrong comes in. (I have the 4th edition; there's also a 5th edition now available.)
The book walks you through the process of developing a sloper set from scratch. But the real draw is the rest of the book (all 832 pages of it), which you can use to tweak existing patterns.
One drawback is that I often find myself overwhelmed by the sheer volume of information. But I've discovered that if I follow the book's directions step-by-step (rather than trying to comprehend pages at a time), I'm always happy with the results.
The price is in line with most textbooks ($95 on Amazon), and it's got the content to back up that price. But if you're just getting into patternmaking, you may wish to start with a cheaper and less overwhelming text, like the Margolis (mentioned above).
Any other fans of this book? Or do you have recommendations of your own on this topic?