Introduction: Knapping Glass Points

Picture of Knapping Glass Points

got this allegedly "antique" yellow glass jar at a yard sale for the change in my pocket, made this yellow glass point to win the Instructables glass contest, cause I could sure use a Dremel, so thank you for voting for it to win the contest, this is my 1st attempt a publishing an instructable so I might have had some trouble getting the pics in the right order, but you get the idea, the pic in step 1 is some antler tools that I use, should have been last

Step 1:

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deer antler tools used to Knapp glass points

Step 2:

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used a hammer to detach the bottom from the rest of the jar, but in a pinch, rock should work too

Step 3:

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next carefully chip off the "lip", using a bopper, the one I used in this case, was of deer antler,

Step 4:

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bop the lip off to create a "zig-zag" edge, aka a scissored or working edge all the way around the piece to make a "pre-form"

Step 5:

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then use the bopper to "skin" the pre-form of all of its factory edge, the outer layer of glass that contacted the mold that made the jar

Step 6:

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as the factory edge comes off the pre-form takes on a rough shape that is ready for pressure flaking

Step 7:

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used an antler pick to pressure flake this point out of the skinned pre-form, did it come out good enough to will the Instructables glass contest? thank you for viewing, and your input & don't forget to vote for your favorites, this one;).

Comments

Riffifi (author)2017-02-15

i had twice the occasion to watch a guy working flint to create prehistoric tools, i find the process fascinating. i can picture how you did this (though i would have been pleased to see you working!). i've never imagined it could be feasible with glass! you got my vote

MutantB (author)Riffifi2017-02-15

thank you, glass is cheap compared to flint unless you have a local source

qwerty qwaz (author)MutantB2017-11-29

try the ground it might have some

qwerty qwaz (author)qwerty qwaz2017-11-29

depeding on ur area

lwolin (author)MutantB2017-02-24

tymtyutlinbilm;9oy uhbjk; liyup.890-

lwolin (author)lwolin2017-02-24

that is latin for nice job. that is verv cool

rc jedi made it! (author)2017-04-21

I did this one from a bottle bottom. Thicker than I wanted, but still learning to get the feel of the edge shelf and pressure angle. I did break some but it's just glass.

jtobako (author)2017-03-03

Percussion angle, below the center line, how to grip the glass and in what (looks like terrycloth), abrading the edge for a better strike, striking v pressure flaking...talking about any of them would help.

http://cavemanchemistry.com/oldcave/projects/stone/bottle.html

MutantB (author)jtobako2017-03-06

sounds like you knapp? yes it is an old towel, thank you for your feedback I will try to do better next time

lwolin (author)2017-02-24

your's is very interesting. Have you used obsidian instead of glass?

MutantB (author)lwolin2017-02-24

yes, but it came from the rock shop as obsidian don't grow so well where I live anymore thanks to AGW ;)

pikeslayer17 (author)2017-02-15

This looks pretty cool, I also knap glass and thought about making an instructable for this contest, but I don't really need the dremel although it would be cool (: One tip is to explain more clearly how to flake the glass, or add a video. Voted

MutantB (author)pikeslayer172017-02-15

thank you, "explain more clearly how to flake the glass" as a fellow knapper how would you?

have asked that myself, best answer so far, is practice, trial & error, & watch youtube

need to get a real camera, maybe will trade a dremel for 1? :) thanks again

lwolin (author)MutantB2017-02-24

gjmedck

pikeslayer17 (author)MutantB2017-02-15

You could maybe have some close ups of the positioning of your tool on the glass, or explain a little more clearly about the positioning. Your piece is really nice looking, have you thought about mounting it on an arrow?

marcellahella (author)2017-02-22

Cool, voted!

MutantB (author)marcellahella2017-02-22

thank you

AaronA71 (author)2017-02-17

Nice work bro! Like you, this is my first time making an instructables, but it was fun! Hope you win that Dremel!

MutantB (author)AaronA712017-02-17

thank you

rlancaster3 (author)2017-02-15

If you warm the bottle over a fire for 5_10 minutes the bottoms will brake off cleanly with less mess.

MutantB (author)rlancaster32017-02-15

thanks will try that some time

_soapy_ (author)MutantB2017-02-17

Heat it up lots, then drop it in water.

DIYWEAPONS (author)2017-02-16

No worries man, you did a great job with it, i hope to see more tutorials from you in the future :-)

DIYWEAPONS (author)2017-02-16

nice work mate, you beat me to it

MutantB (author)DIYWEAPONS2017-02-16

thank you, sorry about that

laughingjungle (author)2017-02-15

Cool man. I've never done this. How long would it take to make one about 2 inches long? Also it would help if I could see how you use the tools. Thanks. Good job. Hope you get the dremel.

MutantB (author)laughingjungle2017-02-16

thank you, it depends on a lot of variables, the skill of the maker, tools, & material being chief, I have made simple points, ie without flutes or notches in less than an hour, to make a really nice 1 can take me several hours, but someone who is really good can knock a fairly fancy point out in less than a 1/2 hr
if you have the desire to learn youtube is a great source for tips on knapping

gm280 (author)2017-02-15

I have never tried to make one, but I do live in an area where I have found lots of authentic spear and arrow heads. Exiting when you find an arrow head that you know somebody actually made centuries ago. Nice project.

MutantB (author)gm2802017-02-15

thank you

Swansong (author)2017-02-14

That looks really pretty :) If you include some written directions in the individual steps it will get more attention on the site and be possible to be featured. https://www.instructables.com/id/How-to-Create-a-F...

MutantB (author)Swansong2017-02-15

this is my 1st time publishing an Instructables after reading your comment I did as you suggested, thanks for your comment,

jackieray.mays (author)2017-02-14

a few pictures and no instructions sort of usless check this out

https://www.youtube.com/watch?v=8eT-eAm1txk

MutantB (author)jackieray.mays2017-02-15

thanks for your input that guy is pretty good at knapping, I did add some instructions

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