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one of my thinnest preforms.

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iowabow:
We all should be able to knap as thin as where my fingers are on the preform. This is not hard guys it just runs against the safe way bifacing works. It is that place when you are making a point that no longer wants to thin so you try so hard to concentrate so you don't screw it up and you think it if I just have the platform sticking out and I barely hit I can take a nice thinning flake and not ruin this gem" ok trash that idea. Then get more aggressive on the platform angles and hit it higher than you think with a steeper angle than you think. These are all the no no rules in my abo book. I have now torn those pages out and rewriting the game plan.

iowabow:
Never thought I would see the light in abo. And as you see I tried to keep thinning it and took a chip with the ishi lol. Ya gotta keep trying right!

le0n:

--- Quote from: iowabow on November 24, 2015, 09:02:45 am ---But be warned you a riding on the edge of stepville.

--- End quote ---

i call those 'thinning steps' ;)


--- Quote from: iowabow on November 24, 2015, 09:15:39 am ---Then get more aggressive on the platform angles and hit it higher than you think with a steeper angle than you think.
--- End quote ---

i wonder if your angles of attack are similar to what i'm experimenting with.

i get the feeling that i'm going to snap the piece in half. at least this would happen if i were to pressure flake with these angles and platforms. but i keep my finger tight against the underside where i want the flake to be.

come to think of it, if you don't strike fast enough, it will probably could snap in half.

iowabow:
Yes sometimes I support and sometimes I leave room for the flake to run just depends

iowabow:
Here are a couple platform pictures and the preform from tonight. BTW the hold should be half of 45 degrees so more like 22.5 degrees.

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