Main Discussion Area > ABO
"no bulp of percussion" thinning
iowabow:
Maybe I am a little past mid stage but ya get the idea I hope.
caveman2533:
Look like you are ripping the platform edge off, or lipping. The flake should have a tiny lip where it was torn from the edge. If you can control that it can leave a wicked edge. But it is also very risky because the very thin edge is also very fragile. I try to avoid lipping on flint. On argillite and rhyolite and quartzite this common and is a normal flaking signature of wood struck flakes.
Hummingbird Point:
iowabow,
You talking about pressure or percussion flakes? On percussion flakes, you can get very little to no bulb by using elk anler. It is "springier" or some say "softer" than whitetail so you can get away with less (sometimes no) abrading and the antler will dig into the edge and pull the flake off. I do this sometimes kind of just by feel in late stage work using a hafted antler which allows me to kind of swing the antler into the edge and pull down on the tool's handle at the same time, basically making a big presure flake. I don't really know how to explain it. I just do it and don't really understand it. Anyway, point is, when I see people talking about no bulb, or flakes that show no abrading, I think of elk antler, although with my whitetail "antler hammers" it works to an extent too.
Keith
caveman2533:
One step away from a perverse fracture
iowabow:
--- Quote from: Hummingbird Point on December 28, 2015, 06:45:30 pm ---iowabow,
You talking about pressure or percussion flakes? On percussion flakes, you can get very little to no bulb by using elk anler. It is "springier" or some say "softer" than whitetail so you can get away with less (sometimes no) abrading and the antler will dig into the edge and pull the flake off. I do this sometimes kind of just by feel in late stage work using a hafted antler which allows me to kind of swing the antler into the edge and pull down on the tool's handle at the same time, basically making a big presure flake. I don't really know how to explain it. I just do it and don't really understand it. Anyway, point is, when I see people talking about no bulb, or flakes that show no abrading, I think of elk antler, although with my whitetail "antler hammers" it works to an extent too.
Keith
--- End quote ---
shown was a percussion flake
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