Main Discussion Area > Flintknapping
Can flake over grinding be done ABO?
papoints:
It would be interesting to know if a fogged point would penetrate better than a point of the same size and weight but with a random flake pattern.
Dalton Knapper:
The Gerzean knives in Egypt were certainly done with the Flake Over Grinding (FOG) process, but flaked only on one side. It was probably knapped first, then ground because they apparently could not "slab" chert. I believe both sides were ground, but for some reason, only one side was flaked. The term "abo" as you know it may not apply however because it is quite likely that metal tipped pressure flakers were used - so is that "abo" or not? I have seen these hafted in gold handles in museums.
Here's a look at the blade: http://www.lithiccastinglab.com/gallery-pages/2000octobergerzean.htm
I also know that in North America, some points were knapped as you and I would do it (abo of course), then ground to varying degrees of smoothness, but I am not aware of any that included the additional process of knapping, grinding, then re-pressure flaking (except the Egyptian Gerzeans). I believe that when they were ground, that was the look they were going for (in the Americas).
Interesting topic.
caveman2533:
Gregg Nunn has hand ground several Danish dagger types. I think in his one video he states that he measured 17 miles of grinding to grind one dagger, both sides. Most of the ground points here in the states I also think were of a slate material of some sort. I have always want to try grinding a big preform and then percussion knapping it instead of pressure flaking it.
seminolewind:
Dalton that is really cool I have never seen those before. You're right they were ground on both sides then one was flaked. I also looked at the other picture showing the edge work up close, I kinda leads me to believe one side remained flat so that it could be resgarpened with grinding followed by more micro flaking. Sure would take some time to make that though considering they had no way to slab!
seminolewind:
Check this out here is an article I just found. This dude does just what were talking about...
.ginellames.fr/us/tailler_le_silex/chainop_couteau.php
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