Knapping Glass Points

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Introduction: Knapping Glass Points

About: What Can US do 4 U? just here 2 help.

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:

deer antler tools used to Knapp glass points

Step 2:

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

Step 3:

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

Step 4:

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:

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:

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

Step 7:

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;).

Glass Challenge 2017

Runner Up in the
Glass Challenge 2017

1 Person Made This Project!

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32 Discussions

0
Riffifi
Riffifi

3 years ago

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

0
MutantB
MutantB

Reply 3 years ago

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

0
qwerty qwaz
qwerty qwaz

Reply 2 years ago

try the ground it might have some

0
qwerty qwaz
qwerty qwaz

Reply 2 years ago

depeding on ur area

0
lwolin
lwolin

Reply 3 years ago

tymtyutlinbilm;9oy uhbjk; liyup.890-

0
lwolin
lwolin

Reply 3 years ago

that is latin for nice job. that is verv cool

0
jtobako
jtobako

3 years ago

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

0
MutantB
MutantB

Reply 3 years ago

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

0
lwolin
lwolin

3 years ago

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

0
MutantB
MutantB

Reply 3 years ago

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

0
pikeslayer17
pikeslayer17

3 years ago

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

0
MutantB
MutantB

Reply 3 years ago

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

0
lwolin
lwolin

Reply 3 years ago

gjmedck

0
pikeslayer17
pikeslayer17

Reply 3 years ago

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?

0
MutantB
MutantB

Reply 3 years ago

thank you

0
AaronA71
AaronA71

3 years ago

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

0
MutantB
MutantB

Reply 3 years ago

thank you

0
rlancaster3
rlancaster3

3 years ago

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

0
MutantB
MutantB

Reply 3 years ago

thanks will try that some time