Author Topic: ever try the ulna bone for pressure flaking?  (Read 8190 times)

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Offline Ed Brooks

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ever try the ulna bone for pressure flaking?
« on: June 27, 2016, 04:32:34 pm »
Like a lot of other ABO knappers I use an ulna bone for my notches. I have started to use the ulna for pressure flaking too. I just turn the bone sideways and pressure flake with it. now most of my points are birdies and I do like obsidian so I'm not sure of the results on other stone. Give it a try you may like it, I use it more than antler now. Ed
It's in my blood...

Centralia WA,

Offline JW_Halverson

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Re: ever try the ulna bone for pressure flaking?
« Reply #1 on: June 27, 2016, 05:00:57 pm »
Ima stand here and wait for iowabow to come a-runnin'!   ::)
Guns have triggers. Bicycles have wheels. Trees and bows have wooden limbs.

Offline iowabow

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Re: ever try the ulna bone for pressure flaking?
« Reply #2 on: June 27, 2016, 11:20:13 pm »
Sounds great show us some pictures!
(:::.) The ABO path is a new frontier to the past!

Offline Dakota Kid

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Re: ever try the ulna bone for pressure flaking?
« Reply #3 on: June 28, 2016, 11:33:57 am »
I find I get the best results with my ABO tools on obsidian and glass. I prefer the ulna for pressure flaking and antler for percussion. As the stone's hardness increases, I tend to increase the hardness of my tools. When I work rhyolite, I usually end up with a small ball peen hammer after getting frustrated when I can't get a flake with anything else. I may end up making a little hammer-like bopper from a small hard hammer stone and trying that.
I have nothing but scorn for all weird ideas other than my own.
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Offline Ed Brooks

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Re: ever try the ulna bone for pressure flaking?
« Reply #4 on: June 28, 2016, 12:47:27 pm »
Not a lot to show but I'll give it a try. This is a small piece of gravel in most piles, but I think there may be a birdie in there. Ed
It's in my blood...

Centralia WA,

Offline Ed Brooks

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Re: ever try the ulna bone for pressure flaking?
« Reply #5 on: June 28, 2016, 03:45:28 pm »
after my 2nd break this am, this is what I found in that rock, nothing special but would leave a mark. Thanks for looking, Ed
It's in my blood...

Centralia WA,

Offline nclonghunter

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Re: ever try the ulna bone for pressure flaking?
« Reply #6 on: June 28, 2016, 04:07:33 pm »
I have used ulna bones from deer I have taken. I am not overly impressed with them on harder rock. I am certain on obsidian it would work well. From medium sized whitetails the bone is not thick and chips easily. It does not take long for it to shorten. It also needs a little edge grinding or filing a lot to keep a blunt edge from the edge breaking off or crumbling. I do a lot of rhyolite knapping and it is necessary to get good edge flakes to thin the point before even trying an ulna bone. They will work but I rarely use one now. I have seen pictures of ulna bone artifacts with long sharp points described as knapping tools. From my expierence it wouldn't even make one good edge flake.
Perhaps heavy mule deer or big northern whitetail bucks may have stronger ulnas but I would be surprised if they did much better.
Just my expierement and results.
« Last Edit: June 28, 2016, 10:20:36 pm by nclonghunter »
There are no bad knappers, only bad flakes

Offline iowabow

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Re: ever try the ulna bone for pressure flaking?
« Reply #7 on: June 29, 2016, 12:06:30 pm »
The unla works amazing well with burlington.
(:::.) The ABO path is a new frontier to the past!