Stone Tools

 A few sets made with very basic tools - shards of flint and slab of slate. Our stone age ancestors were very skilled with stone and could make far better stone tools than these so they would have been more than capable of making friction fire sets with stone tools. As I have found flint is very sharp and even with small pieces of flint like the ones below , it is possible to make friction sets - it just takes a little while longer. The slate (photo 1 ) was very good for processing the hearth board by scraping the wood over the sharp edge and by sawing the wood up and down the edge it made an excellent v notch (better than some I make with a carbon steel knife!)