208 - Bottle Bottom Knapping - Indirect Percussion on Blue Glass Arrowhead Part 1

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[@pmarsico]

Wonderful and inspiring! Can't wait to make some tools and get started on something I've wanted to learn since I was a kid in the 60's! Thanks for taking the time to create and share this.

[@darktechnologyjoeramirez4252]

You chose the right knapper to learn from!Don't make any tools just go for a walk find some rocks and a bottle and get started.

[@davidpoppenhagen4278]

Glass flak in the eye would be really painful and cost an emergency trip to the hospital. And some sleepless nights. Eye protection is very important I like the blue 🔵 color nice work. Thanks for showing this craft.

[@KnapperJackCrafty]

Yes, glass can be dangerous.

[@jackblackpowderprepper4940]

That thing is gorgeous. You sure make it look easy.

[@KnapperJackCrafty]

Thanks

[@marioamayaflamenco]

Beautiful work, Jack. You're an artist. And good explaining too.

[@himanshuwilhelm5534]

It is always surprising to see how thick the bottom of a bottle really is.

[@American-Plague]

What really surprised me when I first started was how thick an old school TV screen really is. No wonder they're so damn heavy!

[@jimmyrustler8983]

@@American-Plague Oh yeah, Coupled with the CRT and the Flyback in them. They are great for electronics projects too, or as a dust collector, by simply turning them on 🤣

[@terrygreennway9655]

Nice piece. Thanks for the video. Terry

[@TheRedhawke]

Very good explanation at starting at 8:00. Thanks for your time and sharing with us.

[@ShinBone5000]

Ahhh, one of my favorite materials to work with when I started knapping. It's really neat to look at finished arrowheads made from blue, green, brown and red glass bottle bottoms. I've read that Native Americans broke the red glass out of railroad lanterns to get material to make arrowheads. Nice video :)

[@American-Plague]

Australian Aborigines also used to climb the poles of telegraph lines and steal the glass insulators causing the lines to suddenly go dead. The repairmen eventually solved this problem by simply leaving a couple extra glass insulators at the bottom of the poles. 😎

[@KnapperJackCrafty]

Crushing the edge is when the tool makes sort of a "crackling" sound when trying to remove flakes instead of a snapping sound. Crushing creates only very small flakes and fragments and leaves the edge looking crushed and powdery instead of smooth, clean, and sharp.

[@KnapperJackCrafty]

Watch some of my other vids... it's not pressure flaker. I made it out of a 3/4" diameter UHMW plastic rod, drilled a hole in the end, and inserted a piece of copper wire. Pretty easy. You can buy the rods at Harbor Freight or ebay and the wire is available at Home Depot.

[@razorsharptokill]

Pleasure to watch. I have just got back into knapping while I am on a temporary military operation. Indirect percussion has opened new doors for me.

[@KnapperJackCrafty]

Sweet.

[@backyardsounds]

I tell you what would be awesome. If someone could film this with a dead on horizontal shot at super high speed then show the flaking at different angles to show what is happening with the knapp/percussion. It would look awesome and maybe demonstrate what's happening when the tap occurs.

[@wesleyartrip50]

a beautiful piece of work..liked the glove tip too

[@user-eh4kv6vl8n]

Enjoyed your sharing nice work.

[@KnapperJackCrafty]

Thanks

[@woodcutter610328]

Well done friend, I have no local source of stone so I've been using a lot of glass. Thanks for showing us your method!

[@KnapperJackCrafty]

Because flaking across the concave side in the beginning means that you will have to try to run long flakes in a concave surface, which doesn't make sense and doesn't yield good results. I get better results when I run flakes on the concave side during the last stage if thinning the point.

[@josephstollsteimer1556]

Great piece jack

[@KnapperJackCrafty]

Thanks

[@SaraSaraBoBara1]

Very helpful, I am fairly new to knapping and love seeing all of the different techniques people use. Forming a rectangle is very smart for starting with a thicker glass bottom, I will try that next time I use thicker glass.

[@KnapperJackCrafty]

Cool. Good luck with the knapping. Protect your eyes. :-)

[@robertcorbell1006]

I showed a kid one summer how to do this with just a pebble and a beer bottle bottom using an antler tip for pressuring. I shared mine during the lesson telling him that he could buy his own from a Petco or Bass Pro for five bucks. :)

[@BushMania4]

I like the way you pressure flake... I'll have to try that... Thanks for showing!

[@scotyung7751]

About cleaning up all that glass? I lay a 12x12 sheet of plastic down on my car put or if I'm working on tile floors, I sweep it all up then I mop the floor 5 times using mop & glow to bring back the shineyness. But, it takes several coats of mop & glow or insta-shine.

[@KnapperJackCrafty]

Cool. :-)

[@bongofury67]

Car put??

[@KnapperJackCrafty]

Little helpers... heheh. Actually, I'm holding the percussion tool behind my knee. I show this more clearly in one of my videos about "How I make a Video".

[@williambuck6939]

i know i still have a whole lot to learn ,but it allways did take me just a little longer to get the hang of some things.but i am persistant .thanks again for the videos

[@KnapperJackCrafty]

Sure. If you have the equipment and the know-how to melt glass the go for it. Large bubbles and interior stress cracks will mess up your knapping, of course, but those are the only things that may be a problem.

[@pedrobernal7389]

The blue glass makes it look beautiful

[@williamcleveland6715]

Pretty cool I grabbed a piece of obsidian at the same time I started this video watching you. Mandu I need some help LOL

[@KnapperJackCrafty]

Haha

[@danmayer7845]

Sweeet helping me lots right on

[@NN1811]

This is very cool.

[@KnapperJackCrafty]

Thanks

[@KnapperJackCrafty]

Glad you like it. Look around a bit... there's a ton of flintknapping videos out there. :-)

[@Angnic22]

Never heard of knapping before, but this was pretty cool!!

[@williambuck6939]

glad I didn't have good and big enough pieces yet im afraid I would have wasted some good stone,but now if I come across some good stone im sure it wont be wasted ,thank you so much for youre videos,it is truly satisfying to be able too know I could make a small arrow head,givin the chance.you are a cool dude hobbit.

[@KnapperJackCrafty]

All the glass ones go to my kids. They especially like the blue ones but I've made all sorts. I need to put up a video with a green arrowhead next, I think.

[@marycomeau9364]

Are there colors not in your glass collection?

[@MontanaBarNone]

Looks great! I used to use pepto bismol bottle bottoms......kinda cool too.....

[@KnapperJackCrafty]

They work very well... just like obsidian.

[@genegorringe7395]

Damn brother that one is beautiful 👍 Gene Gorringe Mi ✌️🇺🇲

[@KnapperJackCrafty]

Yes, you can use wood but the plastic is a lot like antler and has a bit of "bounce" to it and it works better than wood. The bounce helps to transfer energy into the material, I think.

[@CrazyForFlint]

Nothing worse than making a nice glass arrowhead then waking up the next day with shards in your fingertips!

[@stanleygoard8551]

I bought 18 slabs of obsidian, thinking that it would be good to start learning on, it probably is but I still can't seem to figure out how to start a piece. My slabs range from 1/4 to 3/8 thick and 5 to 7 inches long. I would love to see a video about this please.

[@theresabrown203]

Thank you for your videos they are awesome!

[@KnapperJackCrafty]

You're welcome!

[@MILOSLAVJMP]

To bylo rychlé a krásné. Díky.

[@KnapperJackCrafty]

Sorry, the rods are available from Grainger, not Harbor Freight.

[@scotyung7751]

This tablet has a mind of it's own. it supposed to say carpet, not car put.

[@marcosnunez1960]

VERY NICE WORK.

[@KnapperJackCrafty]

The white material is UHMW plastic rod.

[@dakellymon]

A pleasure to watch

[@KnapperJackCrafty]

+Randall Kelnhofer Thanks!

[@Steve_Just_Steve]

Wow, that was cool. Thx

[@KnapperJackCrafty]

Thanks.

[@bongofury67]

"A stack, a step, a hinge, its all the same to me" Well, it's not the same to me! I thought this was instructional? If you are gonna teach, then teach! Loved the video til that point. I learned a lot! Just wish you would have elaborated a bit more. Anyhow, I still enjoyed it, and keep it up! Thank you!

[@KnapperJackCrafty]

A step is a broken-off flake before it terminates . A hinge has a scooped out termination. A stack is more than one step or hinge in a series (or on top of each other) that creates a raised spot or island. Whichever is the case, the solution is to remove flakes big enough to clean off the mess.

[@bongofury67]

Great! Thanks for the clarification. Im brand new to this.

[@mikeneumann3211]

Nice video. Very instructive. Thanks!

[@williambuck6939]

well I finally got it lmao,i finally slowed down enough to see what I was doing wrong ,why I couldn't get the small pieces of flint to spall and flake,yep I was watching you but I wasn't puttinto practice what you were saying.i still don't really have any flint or chert worthy of making an arrowhead but I can make it spall and flake im so happy I cant stand it .

[@HipposHateWater]

I like your ishi candle ;)

[@KnapperJackCrafty]

Yes, I hold it behind my knee. I sit low enough to allow for this or I put my foot on something to raise my knee.

[@robertcorbell1006]

I've heard of fingerless gloves, but not gloveless fingers... also I prefer antler tips to copper pressure flakers since they thin it out more.

[@KnapperJackCrafty]

Also, you can leave the original surface showing on the concave side and not even worry about flaking it. The concave surface is already in the shape of a flute and will aid in hafting... so why mess with it if you don't have to? :-)

[@captainflint8412]

I can utilize glass bottle bottoms but can never fully remove the curve , my points always end up being bent .. Any chance of a small series on curved flakes and bottle glass ? Being bad at spalling I often end up with thick and fairly curved chunks or twisted ,curved thin flakes .. There must be a point in them but I struggle with the curves

[@KnapperJackCrafty]

I've got more glass and obsidian videos coming up...

[@gabewilkinson7609]

very nice work,your good at that sir

[@daveeden2220]

you make it look so easy

[@KnapperJackCrafty]

I wish. :-) Thanks.

[@currenwiggin8982]

I’m still a beginner, I’m on my 3 month of knapping and I just got an indirect percussion Ishi stick. I’m not sure how to use it because I’m not getting results like yours. my flakes aren’t as big. It is 3/4” in diameter, any tips. For a beginner of course. I’m only 13 but I want to make one good one by the time I’m 14.

[@KnapperJackCrafty]

If you keep practicing you'll get good enough after a year. It takes a while. My advice is to knap only the good stuff or the best material you are able to get.

[@currenwiggin8982]

Before today, I was sitting on a beach chair. Today I tried on a bucket and got way better results. I was knapping high quality dacite.

[@MrGoldsmith2000]

Interesting and informative video. Thanks for posting it.

[@KnapperJackCrafty]

I agree. All we need is a volunteer... :-)

[@KnapperJackCrafty]

I would use the steel. Mild steel is less brittle and will give you better results than brass.

[@justinhall2117]

Would you recommend practicing on glass before knapping stone? I ask because I'm having difficulty riding the right stones near me

[@KnapperJackCrafty]

If you have nothing else, then yes, I recommend bottle glass. But heat treated stone is best.

[@justinhall2117]

@@KnapperJackCrafty is all the stone that you're knapping heat treated first off camera?

[@wendelledde695]

where could i get the u h m w plastic rods. my local harbor freight dont carry those any more

[@KnapperJackCrafty]

Ebay or grainger.com

[@outdoorsmandanny]

O ok. Thanks for all the help

[@KnapperJackCrafty]

Glad to hear that! Persistence is key. :-)

[@Angnic22]

Thank you sir! I actually watched quite a few. The resulting pieces are beautiful. What do you do with them when you are done?

[@keeganyost8123]

I use a similar technic with glass bottles. But I sometimes have a hard time with getting flakes to travel across the entire blade. What's the secret?

[@KnapperJackCrafty]

The secret is lots of practice.

[@keeganyost8123]

@@KnapperJackCrafty Alrighty

[@KnapperJackCrafty]

There are some knappable stones in NY, one of them being onondaga chert. There's also esopus chert, and normanskill chert. You may want to google "New York Lithics and Cherts". It's a business that sells chert to flintknappers.

[@1zzyfixed]

your welcome and i wish i can do that

[@Luciffrit]

Well I was going to grind the glass down to powder or close enough state then pour that into a clay vessel and let it sit over the top of my coal bbq until it melted through finally pulling it out with tongs and letting it air cool in a bucket of ash I have. Hopefully I'll get minimal bubbles.

[@KnapperJackCrafty]

Hmmm.. I got to go find one of those...

[@Luciffrit]

Just wondering, if you were to melt a bunch of old beer bottles into a core would that be a good material to nap?

[@michaelvannoy7566]

Will you show all the tools you used on this head ,thanks

[@KnapperJackCrafty]

Do a KZbin search for "jack crafty tools"

[@KnapperJackCrafty]

The easiest place to find flint is ebay. Of course, you'll have to buy it. Free flint is available to pick up off the ground in certain areas. Most of these areas are kept secret for obvious reasons. Try to find a flintknapping group near you (google it) and attend one of their gatherings or "knap-ins". They will have lots of flint.

[@jacksongraydon2503]

What brand was the bottle? Hard to find large blue bottles

[@KnapperJackCrafty]

Go to Walmart and look for Riesling wine in the blue bottles. It costs around $10 a bottle. Or you can order blue wine bottles off the internet. Those are about $2 to $4 each but you have to buy a whole case of 12.

[@triumphmanful]

Is that a copper or brass tip on that tool ? It also looks like it is loose, is it supposed to be loose ? And the handle is long, do you hold it between your legs, then whack it lightly ?

[@robertmetevier9710]

I heard a lot of women in tribes were the ones that made arrowheads one of the tribes had the women doing it because women I guess had more patience I don't know if that's true or not

[@KnapperJackCrafty]

I haven't heard that one, but it has been shown that women in some tribes were knocking out blades from prepared cores and also using debitage flakes for various cutting tasks.

[@KnapperJackCrafty]

Cool... I'll look into it.

[@AMBOSS_Silesia]

No, no :D I meant that it's nothing new that I've enjoyed it ^^ It's awesome as always :) I've collected some bottles to make arrowheads, but don't have such a nice blue glass. Only green, brown and white. Maybe I'll find somewhere if I really try :P

[@squatos1969]

interesting technique,Ill try it.

[@rattlerboi4034]

i'm slightly confused, i'm trying to learn and most people i watch that flintknapp say to flake the concave side...k

[@KnapperJackCrafty]

Yeah, I know. Just do what works for you. If it seems like nothing is working, make arrowheads out of bone.😁

[@rattlerboi4034]

​@@KnapperJackCraftyomg I just read this like a year later and I am laughing so hard rn, anyways I'm 14 now and my skills have improved, must of my pieces are ever so slightly thick, but they are really nice little arrowheads, even made a flanged knife blade! My arrowheads recently have started averaging a good 1-2 inches! I am so proud of them, even though they don't compare to some of the arrowheads you've made lol

[@KnapperJackCrafty]

@rattlerboi4034 keep on doin what you're doin!

[@2016thompj8]

Hey mate Ive herd of an ishi stick but it doesn't seem to be like the tool you have Could you please tell me the name of the tool with the rounded point that you put against the rock then hit with the other thing Thanks

[@dodgercan]

Do you have that Knapping tool under your knee if not how are you using it?

[@KnapperJackCrafty]

Yes, under my knee.

[@roberthahn5945]

Is that Cooper in that synthetic material

[@KnapperJackCrafty]

Yes

[@ReiGnoFBaDaSSerY]

I think ill make some of these for my atlatl darts.

[@KnapperJackCrafty]

People have been using glass for knapping ever since it was invented. :-)

[@MrDavidTiller]

Havn't forgotten the Obsidian. Just not getting much time here. Sorry!

[@kingharvest]

Possibly a strange question, but in these glass/obsidian knapping videos I'm always really curious how people deal with cleaning all of the tiny, tiny shards in their working area. I've watched lots of instructional videos and never seen someone address how they keep their work area clean enough to where they aren't constantly paranoid about glass shards everywhere. Do you have any clean up advice for beginners?

[@KnapperJackCrafty]

Lots and lots of dusting off (my clothes and arms/hands) and lots of vacating. I even vacuum my face and hair. I've worked with glass a lot and I'm extra OCD when it comes to the cleanup.

[@KnapperJackCrafty]

vacuuming

[@kingharvest]

Fair enough. I have a similar compulsion with every day glass breakage because I just really hate broken glass. I guess once you get a pattern down for cleaning up your space after working it's not such a hassle.

[@bongofury67]

Here is my advice. Do it outside! Away from were anyone walks or plays. I do mine on the edge of my lawn. If thats not possible, put down a 6 by 6 tarp, or something equivilent. You can capture it all.

[@bongofury67]

Also, what do you do if you drop a glass and it shatters everywhere. Just clean up the same.

[@Promethium666]

why not use a dremel or a belt sander to reduce the glass to the shape your after, whats the point of knapping when better tools exist? Or do you do it because you want to get in touch with your inner cave man? or is it because you like knapping as a hobby to make things like glass arrowheads for display? I'm really curious as to why people do this when there are better tools available to shape stone/glass/volcanic rock.

[@KnapperJackCrafty]

Have you tried shaping glass with a dremel tool or sander? Someone would probably ask, "Why did you choose to shape glass when there are much better materials for sanding like bone or wood?" Knapping is cool. That's why I do it.

[@American-Plague]

If we're asking that question then why even shape glass at all? Why not just buy a gun? Because knapping is a hobby like any other. People do it because that's what they like to do, not because it's necessary.

[@KnapperJackCrafty]

Riesling wine, purchased at wal-mart.

[@KnapperJackCrafty]

Cool.

[@mjbradshaw]

Is that white punch you are using held under your leg?

[@user-wl1po8df9y]

Ancient silla

[@KnapperJackCrafty]

You're welcome.

[@macumuzahn]

Hi, do you have a video showing how you are holding the rod which is doing the striking onto the glass, how is it secured. Many thanks.

[@KnapperJackCrafty]

see this video: kzbin.info/www/bejne/mZLTeJRugtdgo7c

[@macumuzahn]

Many thanks to you Sir.

[@gabewilkinson7609]

how log have people been using glass for knapping ?

[@bongofury67]

how is he holding the striker?

[@alanroberts4060]

superb

[@KnapperJackCrafty]

No worries. :-)

[@KnapperJackCrafty]

Nothing new? Geez. I guess there are plenty of other guys out there knapping glass with indirect percussion...? And with two cameras to capture the action? :p

[@mtnman259]

17:39 is where you changed your approach to the same way I pressure flake mine the whole way. When you hold it in the palm of your hand to flake - I find I can't get the knack of doing it like that. Is this frowned on then to do it in the manner which you changed to after 17:39 ? Does it really matter that much ? I find that I can hold the point at such an angle and put pressure on it to make the flakes travel better and not create such a steep bevel edge.

[@KnapperJackCrafty]

+Daniel Patrick There is nothing wrong with using pressure the way you do. In fact, that's how most people remove flakes from glass. I'm the exception. :-)