Reddit mentions of The Art of the Japanese Sword: The Craft of Swordmaking and its Appreciation

This may to be a linguistic / usage difference (the author's intended scope is not entirely clear to me). In terms of Japanese swords, the typical translation for togi/togishi is polish/polisher. But there isn't really a word in English that encapsulates the complex role of a togishi or what a Japanese "polish" is all about.

I go into this a bit in the first section of my Restoration article in the wiki; I encourage you to check that out. The tl;dr is that traditional togi is considered a high art, one that takes longer to learn than swordsmithing and requires tremendous expertise to do correctly. It not only defines the sword's final geometry and gives it its cutting edge, but it also brings out the artistry in a way appropriate to the specific school / smith / period / province / steel / workmanship etc. It's also a form of continual conservationism which is why we have swords from 1000 years ago that we can still enjoy today – virtually unique in the world.

Anyone interested can find more info in books like The Art of Japanese Sword Polishing, Pierres et Sabres (Stones and Swords), and The Art of the Japanese Sword.

There are also some video links here:

• PBS documentary featuring Hon'ami Takeshi at 46:40
  
• Bizen-style sword crafts demonstration: polisher
  
• Met Museum demonstration/lecture with the Fujishiro school