I know ever body says put your char cloth on top well for me its on the bottom sticking out a little one strike and its glowing.
Geoff,
I doubt if they are "Sparks", but I think you might just have found out how sharp flint shards can be. Welcome to the world of the painfull paleolithic!
ATB
Ogri the trog
But I think I am correct in saying that the sparks that ignite the tinder are actually shards of glowing metal, not flint?
Geoff