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My NM-ABO ideas, techniques and tools

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iowabow:
This is a post about my journey through non-metal Aboriginal knapping. As I Knap I will introduce issues that I encounter and how I find my way down the path to a finished point. I have been knapping every morning now for awhile and will try to blog out what I have learned for awhile.
So today the topic is keep it "square" . Primitive people often created bifaces or tools that were retangles. This process of reduction will provide you with more options for thinning as the biface is created. In the picture below on the left is an artifact I picked up from a site. The others are forms I created. The second one from the left was from today. Sometimes you need to just knock off the tip and thin that piece.

Zuma:
When I find gun flints they are rectangular.
I have been thinning from the tip for a long time now.
More like flute flakes rather than full square.
Is the abo piece on the left broken/snapped off.
Looks like a break on the bottom? Could just be shadow?
Zuma

iowabow:
He or she Knapped it almost flat

nclonghunter:
The square preforms are interesting. Not sure why but I have always worked my preforms in a round or hickory leaf shape.

iowabow:
Yes me too for a long time but now I kind shoot for that square form if possible.
So this morning's post is a combination  of square biface, twisted spall, and bulb of percussion reduction. The photos should explain but if they don't please ask questions.
The first set of photos were taken after crunching the edge to a square like form.

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