I wish I had this book 20 years ago when I first started to investigate the art of polishing. This book provides a wealth of information on the technigues, the material and the different ways that can be used to get a sword polisihed. In fact, the diversity of the art is highlighted by the book and certainly dispells the notion that there is only one way to restore a blade. The section on foundation polish discusses how to achieve the proper shape without removing too much material. The different stones are described and how each is used to establish and refine the shape. The finishing section covers the range of materials and tools used to bring out the grain and tempered edge unique to the Japanese sword. It also shows the burnishing and how to highlight the boshi.
There are sections that talk about the history of polishing, the schools of polishing and interviews with several modern polishers. As always there is a note warning about the perils to the blade that can be inflicted by an inexperienced person. The book doesn't reveal all the secrets to the art, such as the various forms of nugui (other than the basic hadori and sashikomi formulas),what types of stones work best with each school or era, etc. But it certainly does provide a well documented, well photographed look at this art form. I highly recommend it for anyone interested in Japanese swords.