![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhY56XO1Yo3bLcreyyg6mSOnLoa2tbPYaagDRuMfS_Yvg-cvh27JdGoZZzYy3dz5-TutK5Aw3UGGg-5MjZRnYIW49A7AMYSd0SI4f8Hq5k-AtBmL8BQpgV1Shmbj0f8a4T6MQ6p-IbhMhQ/s200/cgtsll_51HW4HTH6NL._SL160_PIsitb-sticker-arrow-dp,TopRight,12,-18_SH30_OU01_AA115_.jpg)
This is the definitive guide to sharpening almost anything. The high magnification shots - a razor blade at 4 microns, and a chisel blade just as sharp - are great. A guide to how to sharpen almost anything, and more about metallurgy than I ever wanted to know.