Student Practice For Improvise a Flint and Steel Striker I made these a couple years ago from broken files that I found at work. The only thing that I had to do to them both was to remove surface rust and prepare the edges. I prefer the largest one because not only can it throw a spark, but the file section works well enough for other tasks (bone or wood). I do have two that were purchased from a blacksmith, but I gave them to my son. Spark on char cloth Pine straw tinder bundle with char cloth, blown to flame. 1* 2x t-shirt and punky wood ready to be charred. Tins placed into fire pit with field stones on top of them to keep the pressure from opening them up and ruining the charred punk wood and cloth. If I were using a paint can, I would have to put a hole in the lid. After about 10 minutes, I removed both containers with tongs and placed bricks on them until they are cool to the touch.