I recently got my flint and steel, and made char cloth to go with it. As I had no tin, I wrapped ripped up remainders of a well used 40 years old towel in several layers of aluminum foil, punched a small hole in the middle of what was going to be the upper side and placed it into some coals. It started smoking after a while - it smoked a while and when the smoke stopped, I took the package out of the fire and let it cool down. As I didn't have any idea on how to close the hole, I just let it be. When it had cooled down, I unwrapped it, and I thought it turned out fine: all black, and I had left the pieces somewhat bigger and when I ripped them in half to put them in a box, it still had a somewhat rippy feeling to it. It was easier to rip than the raw material, but it ripped and did not fall apart. So I thought it would be alright. But I do throw sparks, and I can catch them, but they don't go into a coal, they sort of light up and are out again before I can put the cloth into a tinder bundle. Then I tried getting a coal with a goinggear firesteel. The globs bounced right off at first, after some adjusting the same thing: short coal (definitely charcloth doing that) but out before I even could touch the char cloth. Took the same piece of charcloth, held a bic to it. And it went into a coal and this glowed somewhat longer. So in principle it seems to work. My ideas are: the piece of cloth was perhaps too worn out - you can see through a single piece of char cloth. due to the hole parts of the cloth burned anyway, and the remainder simply won't catch a spark. What do the more experienced users of char cloth think?