Found in 3 comments on Hacker News
Matt3o12_ · 2017-12-18 · Original thread
You can get the book for much less on amazon[1] though for a reasonable price (including a look inside). There is even a direct link to Amazon on his website.

[1]: https://www.amazon.com/How-Sharpen-Pencils-Theoretical-Contr...

mitmads · 2013-03-02 · Original thread
Yes. I glanced thru this book at my local library - http://www.amazon.com/How-Sharpen-Pencils-Theoretical-Contra... - Read very zen. My personal preference is a good/non-expensive fountain pen though. Still searching for one.
How to Sharpen Pencils: A Practical & Theoretical Treatise on the Artisanal Craft of Pencil Sharpening for Writers, Artists, Contractors, Flange Turners, Anglesmiths, & Civil Servants

http://www.amazon.com/How-Sharpen-Pencils-Theoretical-Contra...

Fresh book recommendations delivered straight to your inbox every Thursday.