Since good flint is rare as hens teeth around here, I'm left searching the woods for old jars, bottles etc. to knapp.
So far I've tried blue mason jar bottoms, an aunt Jamima syrup bottle, old brown bleach jugs, TV screen, a whiskey bottle, baking dishes and window glass. My favorite is those old bleach jugs. The bottom is about 3/8" thick and nice and flat. I really like the look of that old caramel colored glass. The baking dishes are the toughest, but the brown stuff is prettier.
For all you knappers, what all have you tried? What do you prefer and why? Saw Filer