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copper bopper problems

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carpenter374:
i was watchin videos on you tube and  i noticed the way they seem to have a different purpose for supporting the platform right under the striking edge on the thigh, or supporting with the fingers under the striking edge while holding the peice in the hand. what is the purpose of this? 

D. Tiller:
Usually its the size of the piece being worked. Large pieces need the extra support to dampen vibrations. Smaller ones can be supported in the hand. Its basically the same principle.

Hillbilly:
Yep, I usually do primary thinning on my leg and secondary thinning in my hand. It's important when doing freehand percussion to not grip the piece too tightly or "pinch" it in one spot.

cowboy:
Support, below center, abraid, and accuracy. Theirs all kinds of ways to support a peice. I do it like most I guess. Once your bi-face is worked down kinda thin and your using smaller boppers, I start using the pinch and pull method. You can get up to 30 percent longer flakes by applying just enough pressure and pulling.

Outbackbob48:
I,ve only been Knapping for 2yrs. so I have limted experience but I would say that most of my broken points came from accidental high hits. It sure is easy to miss just by a little an opps its broke in two. Later Bob

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