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Old 02-27-2017, 04:42 PM   #101
Jason Fry
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Got a box of rocks in the mail today, thanks Matt. Didn't get much chance to play with it yet, wife went in the hospital for BP monitoring after some bad numbers this weekend. 35 weeks tomorrow, twins will very likely be here this week.
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Old 02-27-2017, 05:37 PM   #102
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Got a box of rocks in the mail today, thanks Matt. Didn't get much chance to play with it yet, wife went in the hospital for BP monitoring after some bad numbers this weekend. 35 weeks tomorrow, twins will very likely be here this week.
Glad to hear it made it.... does it look like the bifaces all made it or was any busted up?

You, your wife and all the kids will be in my families thoughts and prayers this week for good health!
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Old 02-27-2017, 06:30 PM   #103
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Didn't get a chance to look through it very thoroughly, but everything seemed to be all in the pieces it was sent in. Didn't seem to be anything broken much.


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Old 02-28-2017, 01:07 PM   #104
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Messed with a couple of Matt's flakes today. Also spent some time at the gun show with a guy who knapped. Between Matt's good rock and the guy's technique advice, I knocked out these two this afternoon. Much better thinning on these, although I didn't try real hard to refine them.






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Old 02-28-2017, 03:26 PM   #105
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Sweet!! Looks good. I really like that material with all the small white fossils and and inclusions in it.
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Old 02-28-2017, 04:15 PM   #106
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Looking good Jason Fry.

Wife and I made it to the Pedernales River yesterday and I picked up about 50#'s of rock before my diverticulosis kicked in and I landed I bed after a med stop visit for meds. Second time I got it when down here. Eating tooooo much Mexican chow I guess.
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Old 03-04-2017, 05:51 PM   #107
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Played with some more rock this afternoon. Made lots of small pieces out of big pieces. Nothing to show for it except a bucket of sharp gravel.
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Old 03-04-2017, 10:04 PM   #108
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Played with some more rock this afternoon. Made lots of small pieces out of big pieces. Nothing to show for it except a bucket of sharp gravel.
I tried some yesterday, broke everything I touched! My wife saved a really nice piece by telling me it was supper time! Maybe tomorrow?
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Old 03-11-2017, 06:44 AM   #109
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Well, another less than productive day Thursday. I'm heading home from work in just a few minutes and will post some pics when I get home.
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Old 03-11-2017, 08:59 AM   #110
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Twins arrived safely Monday, and came home from the hospital Thursday. Needless to say I haven't had a knap or a nap much lately.
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Old 03-11-2017, 09:30 AM   #111
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Twins arrived safely Monday, and came home from the hospital Thursday. Needless to say I haven't had a knap or a nap much lately.
Excellent! Congrats!!!!
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Old 03-11-2017, 09:32 AM   #112
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So, like I said the other day wasn't very productive. Here is what I was working on, a piece of plate glass.
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Old 03-11-2017, 09:36 AM   #113
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Well crud. Just found out I need to go do some "chores" One more quick pic. then I'll get some more up later. Things were going good and I made it to this point of getting all the flat sides flaked of and started on a rough shape. More to follow.
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Old 03-11-2017, 09:59 AM   #114
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Yeah, last time I knapped I turned some of your nice sized pieces of glass into some tiny pieces of glass I did figure out that hitting off your leg with a pad gives a much better angle and throws shallower but longer thinning flakes than the technique I had been using.
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Old 03-11-2017, 10:36 AM   #115
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Yeah, last time I knapped I turned some of your nice sized pieces of glass into some tiny pieces of glass I did figure out that hitting off your leg with a pad gives a much better angle and throws shallower but longer thinning flakes than the technique I had been using.
I usually do 98% pressure flaking when working with "slabs" of pieces of glass. Glass and obsidian are really brittle. Percussion is still too hard for me to really have control of it and usually breaks the piece. Switch over to just pressure flaking it. Plenty of videos on knapping slabs out there.
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Old 03-11-2017, 10:50 AM   #116
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Ok. Things rocked along really well on this glass point I was working! I managed one of the best tips I've done in a really long time! So, I was trying to be super careful to not damage the tip and provide really good support while I started notching. I "stalled" my notch once on the first side and managed to get it going again. We still need to set platforms when we notch they are just much smaller and have to be careful of the sides of our notches. So, things are Really looking good! Its looking like the best point I've done in a while!!!! Quick get a picture before something happens!
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Really excited how it is going! Extra careful with support and how I'm positioning and holding the point. Setting platforms carefully, Dang! Chipped an ear off my notch now its going to be a little wider than I wanted. Its still ok, kept working second notch and....... Dang It!!!! Break one ear off! Not sure what I did? Thought I had good support, holding it right, good platform. I could see the whole thing happen. Everything seemed right, notching tool in place, started building inward pressure and it just snapped?
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I might try and save it by changing the base I was going for, but I had to set it down and walk away for a little while!
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Old 03-11-2017, 12:20 PM   #117
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I might try and save it by changing the base I was going for, but I had to set it down and walk away for a little while!
@#%$%! Hate it when that happens. I'll try more pressure flaking and less percussion on the next glass batch.
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Old 03-12-2017, 10:03 AM   #118
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Those things happen, all the time to me, lol.

Bassmat, package will be sent when we get back home. We are trying to negotiate this weather thing right now. Still in Texas tho.
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Old 03-12-2017, 10:08 AM   #119
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We've covered platforms a little earlier in the thread and since I just broke a point trying to notch and talked about notching some lets go into a little more details.
Remember this is just what I know and there are many better and more skilled knappers out there.
We still need platfoms when notching, here I'm trying to illustrate what I mean. Imagine this as a cross section of your point running right up the middle of the notch. The green lines are what the platform angles should look like, and the yellow is the direction of force applied by our tool.
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This platform is very small and not extremely strong and easy to crush or "stall" making the angles wrong and flake removal impossible.
In this illustration I'm trying to show how the angle has been changed to what I see when I mess up notching platforms.
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Last edited by bassmatt72; 03-12-2017 at 11:02 AM..
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Old 03-12-2017, 10:10 AM   #120
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Stand by..... working on pics.?
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Old 03-12-2017, 10:16 AM   #121
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Good notching platform.
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Crushed, no good platform.
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Old 03-12-2017, 10:30 AM   #122
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When things are going right on notching we can take two smaller flakes,(red lines) to help build the platform and remember flakes like to follow ridges so removing these two small flakes sets up a ridge(yellow line) for our bigger flake to follow. Remember all these flakes are being pushed off the bottom side of this point.
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Jason mentioned earlier some people can tell where and how a flake was removed by the type of flake. Notching flakes are usually smaller and good notching flake have a "C" shape to them with some curvature to it. These are not very good examples but in the biggest flake you can see what I mean by curvature.
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Old 03-12-2017, 10:33 AM   #123
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A few more pics of a notching platform set and ready for a flake removal.
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In this last one(sorry not a very good pic.)hopefully you can see how the platform is lower than centerline of the notch.
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Old 03-12-2017, 10:55 AM   #124
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It seems I have cursed myself since we started this thread and I have broken or just flat out couldn't make a point for the last few weeks! That's part of the reason why I was so excited how the glass point was going!
Anyhow, here is an OK obsidian point I did a few weeks ago.
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Old 03-12-2017, 10:56 AM   #125
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Quote:
Originally Posted by Jon Stewart View Post
Those things happen, all the time to me, lol.

Bassmat, package will be sent when we get back home. We are trying to negotiate this weather thing right now. Still in Texas tho.
Thanks! Safe travels!
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Old 03-12-2017, 01:36 PM   #126
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I've googled, but haven't been able to find out exactly what the Indian said when he broke a point like that. I'd love to know some Comanche or Cherokee curse words. It seems like a knapping essential.
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Old Today, 06:57 PM   #127
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Look what came in the mail...a box from John!
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Cholla,for some knife handles! I hope I can do it some justice!
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And some bonus obsidian slabs! Sweet! Thanks John!
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Old Today, 06:59 PM   #128
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I haven't been able to do any knapping lately because of family health issues. Hoping to get back to doing some knapping soon!
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Old Today, 07:53 PM   #129
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Took long enough to get there, dang USPS BUT more important, family first. Prayers sent for healing.
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