Building your own tools can be a great thing and knives are no exception. From the caveman times to Bear Grylls, knives have been an essential part of outdoor survival and just basic utility and around the house use. This Instructable is a basic guideline for making your own unique survival tool that will be suited to your use and designed to your specifications. Also, if you use recycled materials like I did, your knife should be practically free! This is obviously not the only way to make a knife. There are many other tried and true techniques, but this it what i have found to work best. If you don't find all parts helpful, pick and choose. develop your own basic style and make it work best for you. This could take one knife or it could take ten, but keep at it. A tool that you have made is truly a joy to behold. And just because I don't want to get in trouble is people hurt themselves: Knives are tools but also can be weapons. Treat them with extreme care and respect them. Making sharp pointy things has an inherent danger to it so use common sense. Also, dull knives are more dangerous than sharp ones. Forcing a dull knife will increase the chance of slipping and that's bad, even with a dull knife. Ok, I'm done ranting. On to the important part!
Step 1: Designing the Knife: Materials
The first step in making most things is a design and the same holds true to knives. To design my knives, I use graph paper, a metal ruler, a French curve, and a normal pencil. Also, since I use found metal for my knives, I like to have the metal in front of me so I know what I have to work with.