Getting razor sharp heads.

[mspink]

I have been knapping for a little bit now. I'm getting decent at it but I sometimes have trouble getting heads real sharp, I was hoping to here some of you're techniques. Maybe I could give them a shot and see what happens.  Thank you! I love this site!!!

[leapingbare]

you have to place your presher flaker above the platform and press strait down. 1 tec is to remove all your deltas.. another tec is to bevel the point.. i think a beveled point will have the sharpest most consestant edge.

[cowboy]

Once I get a point made to my satisfaction, then I fine tune the edge just like leapingbare said. Just pick all your little deltas back and forth till you straighten the edge and create a row of tiny serration's (which are nothing more than tinier delts's). You won't get a worked edge razor sharp (only the thin edge of flakes and spalls gets that sharp). But you'll get em plenty sharp enough to go through a critter.

[billy]

use a finely pointed antler or copper pressure flaker....that will give you very fine, very sharp serrations.  I almost always have to resharpen my pressure flakers for that final stage because they have gotten dull. 

[aaron]

i struggle with this too.
like they said, put your flaker "above the platform" that is ....most pressure flakes come off a platform that is the abraded edge of the biface- you press in and down on this rounded edge...., but the final pass or two are different , i dont grind the edge to make a platform, i place my sharp tip a little back from the sharp edge and press down mostly, with less inward pressure. the flakes don't go long, but should leave a sharp edge behind. you have to take a big enough bite so there is no crushing- if you get crushing, move your flaker tip even further from the edge.