From scratch but based of the buckley design, but its not from the first edition its from the 2nd edition. But was told from a custom builder, when he used the books a few years back when he first started told me the first edition went through every little detail and was more technical to follow, where as the 2nd was still full of detail just less technical, and easier to follow thats when he suggested, if you have never built a rifle before, go with book 2 like he did, as book 1, was more for advanced builders. So if you guys have actually used or gone through both editions, you can acknowled