Glenfilthie said:
I am going to make char cloth on the weekend but I am wondering how in heck that stuff works...how can it burn when it is half burnt already? It seems like it would be like starting a fire with black old cinders...
When you make charclothe, you are basically making "charcoal" out of it. You are burning off all the volatile elements/gasses and chemically bonded water in the cloth - leaving just the carbon and a little ash remaining. So the process is similar to turning wood into charcoal.
And that charclothe then does catch a spark very fast, and then that spark will quickly spread throughout the rest of the chunk of charclothe that you are using - especially when you gently blow on it. As more of it burns/glows, the heat increases. With it in your "bird's nest" of fine tinder material, that heat then transfers to your tinder, and eventually gets it hot enough to start burning with flame.
If you take some punky wood (half rotted) like elm or maple, and then "char" it like you would making charclothe, those bits of charred punky wood will also catch a spark fairly fast. So the older method used before charclothe was to strike sparks down into those charred bits of punky wood. When a spark caught, you then took that chunk and put it into your "bird's nest" of fine tinder just like you would with charclothe.
A "tinderbox" before the mid 1800's was a container to hold those charred bits of punky wood. And the earliest written accounts of using charclothe only show up right before and during the Civil War - mid 1800's. For various reasons, they knew about charred clothe for catching sparks well back into the 1700's, 1600's and earlier, but no written accounts have showed up so far. But there are accounts of using charred bits of wood, charred bits of fungus, true tinder fungus (inonotus obliquus - off of birch trees and it will catch a spark all by itself without any prior preparation or charring), and amadou (layers of fungus soaked in potassium nitrate). Just not charclothe until the mid 1800's.
So your charclothe is the same as turning wood into charcoal - just using cotton/linen clothe. And you end up with almost pure carbon left.
The rest is all a matter of technique and practice. And watching out for your knuckles.
Mikey - that grumpy ol' German blacksmith out in the Hinterlands
p.s. DO find a buddy to show you and talk you through using flint/steel. That one-on-one instruction really does help.