notching ?

[jamie]

still screwing up my notches. i always manage to round out the belly of the notch and they stall. destroyed a few points  working on the notches this week. been trying to figure out where i screw up.

[StevenT]

I have the same problem, but heck, I'd be happy with notches that looked like these.

[warhawk]

i think that your notching is fine >

[Hillbilly]

I've always had problems with stalling notches, too, Jamie.

[mullet]

 I bought a carbide flexible wire saw blade. I started using this to grind an angle in the notch to get it going again. I've seen people use diamond files to prep the edge also.

[StevenT]

Hey, that's cheating.... were do I get one?

[JackCrafty]

Hey Jamie, check out how Marty does the notches on this one:

---http://www.youtube.com/watch?v=XoYnkPDgjgM&feature=PlayList&p=8EF1ADDF52AE4212&playnext=1&playnext_from=PL&index=6

[jamie]

the video definetly made me realise im not treating the notches as i would a normal flake removal. marty does a lot more prep on the notch platform than i have ever done. may try the punch too. he also uses a much steeper angle than i was using. i think that is where the flakes stall. i'll give it a rip tomorrow, who am i kidding, i'll do it  right now.

[JackCrafty]

 

Makes me want to try the punch too.  Too bad I'm still at work.

[leapingbare]

when notching, punching or presher it is still important to prepare your platform inside the notch. a thin edge in a notch thats below the center line is the same as a thin edge below the center line on a bi-face.
 You also have to thin ahead of your notch.. small choppy flakes and your stall out.. you have to remove material ahead of you notch to keep it going..
 It basically comes down to doing what you already know how to do. Just apply it to your notching.

[jamie]

thats what i was trying to accomplish jesse. just certain things werent clicking. just watched paleoman jims narrow entry vid and that explained a lot.

[FlintWalker]

Here's a video that really helped me out a lot.
http://www.youtube.com/watch?v=vcKBADiWbi8
 It really helps to take a small flake off each inside corner of the notch and square up the bottom of it before flipping it over and taking the next big flake.  These little flakes sorta set up and isolate a tiny platform in the bottom of the notch that will let the next flake release easier.
 

[jamie]

what amazes me after watching that and then looking at original calf creeks and andice points is how they did it with abo tools. im on a friggin mission right now to get this stuff figured out.

[jamie]

i think i get it now. did this with a rib bone

[FlintWalker]

That looks great!  I've seen some authentic points with super narrow, super deep notches and it flat out amazes me what some of the ancient knappers could do.