This is fascinating. I knew different materials would put off different colors, but the *pattern* guide is rather amazing.
building a knife file jig - Google Search
DIY Knifemaker's Info Center: Fixed Blade Anatomy
DIY knife grinding jig - made from hinges, steel plate, and threaded rod. Source: http://www.britishblades.com/forums/showthread.php?35912-Blade-Grinding-(My-way)-lot%92s-of-Pic%92s&s=01086819f84978b70408cd2d0f1583f6&p=547125
2012 Model 29 with Amboyna Burl Handle – Summers Knives
Weekend Project: How to Make a Custom Knife from Scratch
Weekend Project: How to Make a Custom Knife from Scratch | Man Made DIY | Crafts for Men | Keywords: DIY, knife, metal, how-to