glass arrowhead question

[Scott Beitzel]

has anyone ever made and used or used a glass arrowhead on a hunting arrow instead of flint or such .
just wondering as i have a huge supply of glass bottles my buddie is cleaning out his grandmas basement and they are just like the older juice bottles an i wanted to try my hand at flintknapping  and just thought wonder if i made a head if it would be practical to use it or would it be better to make them pretty and hang them on the wall .

thanks for all answers in advance .

Scott

[lpcjon2]

The question is would they be as strong on impact as flint or obsidian(spelling)?

[Broken Arrow 1]

I have no experience with them but I would think they would break rather easily.

same as obsidian.

[Ragnarok Forge]

Osidian is a mineraloid ( read glass ) which has the same strength characteristics as glass from a bottle.  They will work fine for hunting.

[calgarychef]

I've been flint knapping with English flint and a bit of glass.  I can say that flint is definately stronger than the glass.  I don't know if that information helps or not.

[Bobby Urban]

I knap a lot of heads out of glass and have taken big game with them.  Obsidian too - which is the same thing.  A good source for glass is pet shops.  Look for the fancy glass rocks they sell for aquarium decorations.  It is slag glass and comes in cool colors - just try to steer away from any with a lot of air bubbles and you can make very servicable hunting heads from it.

[Bill Skinner]

Glass is stronger than obsidian, the pretty streaks in obsidian are different minerals that ruin the uniformity and density and make it brittle.  Glass will make a very servicable point.  

It is actually more important to have a smooth transition and no corners where the point enters the shaft than what the point is made of.  Bill

[Scott Beitzel]

thanks for the info guys . and thanks bobby will have to look at some of those colorful glass to give them a try guess its either gonna work or ill cut my fingers trying lol.

once again thanks for the info .

Scott

[sticbow]

i know someone that shot a hog with a glass head cut one rib "in two" an going out cut another halfway thru an was still sharp enough to hunt with..

[sticbow]

[twistedlimbs]

yup glass is a bit stronger than obsidian, not as tough as chert, all will kill just fine, just get em sharp!