Primitive Archer

Main Discussion Area => Flintknapping => Topic started by: aero86 on January 11, 2010, 02:18:19 pm

Title: working glass.
Post by: aero86 on January 11, 2010, 02:18:19 pm
is glass a good substitute to practice proper flaking on? my girlfirend broke a picture frame and i thought it might be good to work on since it is clear!  haha
Title: Re: working glass.
Post by: leapingbare on January 11, 2010, 02:58:22 pm
Glass is ok to play with and makes cool points, but i think i Pic frame would be to thin.
Title: Re: working glass.
Post by: Bone pile on January 11, 2010, 02:59:02 pm
The glass your speaking of is usally thin.You could pressure flake thin glass but hitting it with a bopper will most likely break the glass.
Bone pile
Title: Re: working glass.
Post by: billy on January 11, 2010, 05:50:55 pm
Aero,

Use the flat bottoms of larger beer and wine bottles....those work much better.  They are thicker.  Window or picture frame glass is just way too thin....you'll get frustrated because it breaks way too easily.
Title: Re: working glass.
Post by: aero86 on January 11, 2010, 05:55:35 pm
alright then, ill just throw it away then.  guess i need to get to work drinkin!  hehe..
Title: Re: working glass.
Post by: billy on January 11, 2010, 05:56:55 pm
you could go to a recycling center and start going thru their bottles....that way you wouldn't destroy your liver in the process....
Title: Re: working glass.
Post by: warhawk on January 11, 2010, 06:06:41 pm
great idea Billy, i get my glass from areas that had old home on or near the place i hunt fro arrowheads. Oh i never thought of going to the recycle center.
Title: Re: working glass.
Post by: aero86 on January 11, 2010, 07:44:16 pm
yeah, i was joking.  if i drink 3 im gravy
Title: Re: working glass.
Post by: cowboy on January 11, 2010, 09:16:40 pm
3 don't phase me but give me six and the sky's the limit ;D. No kiddin though, find ya some thicker type bottle bottoms and other thicker glass and go to town. Just have plenty of bandaid's on hand.
Title: Re: working glass.
Post by: DanaM on January 12, 2010, 08:00:26 am
If you have any type of glass shop stop by and talk with them they should 1/4" plate glass scraps and
for a few bucks might cut them into preforms for ya.
Title: Re: working glass.
Post by: recurve shooter on January 15, 2010, 10:50:29 am
i use glass. love it. cuz its all i have. ::)

there is some kinda cheap gin called amsterdam's finest or something like that and it comes in a little square-ish bottle. i like those. i cant find a jack or jim bottle though, that would work well.
Title: Re: working glass.
Post by: brian melton on January 15, 2010, 03:50:07 pm
I spend a bit of time collec ting old bottles, if you know where people from the 30-40"s dumped garbage you can find old purex (bleach) bottles that are great along with a variety of other glass bottles... ;D
Title: Re: working glass.
Post by: mullet on January 16, 2010, 12:59:06 am
 I love the color of those old bleach bottles. :)
Title: Re: working glass.
Post by: bigcountry on January 18, 2010, 04:40:35 pm
I am still in the process of collecting material.  I got a bunch of TV screens.

Does anyone know what the coating is on the back of a TV screen?  I hope it isn't lead.
Title: Re: working glass.
Post by: recurve shooter on January 19, 2010, 10:48:58 am
i dont know what it is but i dont think its good for ya.

however ive used alot of it and im still alive. cant figure out where this 11th finger came from though.  ::)
Title: Re: working glass.
Post by: Lobo69ss on January 19, 2010, 01:34:02 pm
I`m not sure what it is, but I just take a damp rag & wipe it off.  If it`s lead wetting it should
(I hope) keep it from getting airborn so I`m not breathing it.  The coating on the glass behind
the screen is something like a painted on thermal coating to contain the heat from the tube.
  It`ll come off when you start your flaking whether percussion or pressure depending on your
working style.  Sometimes if a piece is small (1 1/2" or less)I`ll just pressure flake from a square
edge a couple passes to get some convexity. The flakes will normally run 1/4 way or more across
the pc.with a decent scar pattern if you space `em out.  Then abrade, grind to raise the working
edge for the face you`re working on before taking the second pass. 2 passes usually removes all
the coating & looks good. Shape to what you see in your mind & go from there.
Title: Re: working glass.
Post by: StevenT on January 19, 2010, 05:30:23 pm
The powder is Phosphor coating. It is used because when an electron beam hits it, it glows. I have read multiple reports, most of which say it it not toxic, but you should not breath the powder. Phosphor is used in a lot of other things, most commonly fertilizer. You wouldn't want to breath that stuff, but it is safe to use it on your grass. I use the glass out of old computer monitors. What I do after I break them open is to clean them out with a water hose, something like Ajax and one of those green scrubbers. I clean them out in the middle of my yard. Just take care not to spray water on it to fast in order to keep the dust down. Once you scrub them out real good, they are good to go.  The biggest heath warning associated with CRT screen or TV screens is the lead contained in the glass. Why do you think TV's are so heavy? One of the reasons is all the lead in the glass. It is the lead in the glass that make throwing away old TV's so difficult. I wouldn't let young kids around if you are napping TV glass. So basically, don't breath the dust and don't eat the glass and you should be OK.
Title: Re: working glass.
Post by: recurve shooter on January 20, 2010, 10:28:38 am
don't eat the glass and you should be OK.

looks like im gunna have to find something els to put in my omlets in the morning now.  :(