Joerg's channel has revolutionized the crossbow and archery . Nothing changed for thousands of years until he got interested in sling shots . Well done Joerg.
"Nothing changed for thousands of years " This is complete nonsense, i don't know if it's coming out of sheer ignorance or sheer fandom, but it's completely wrong.
It's rumored he was the first to invent them and created a time machine from a few scrap pieces of mdf, plywood, screws and rubber bands. He then shot his invention into the past at light speed to help our ancestors out! True story! It has to be, it's on the internet.
Bought it and printed it. It is worth mentioning that the design contains an option to print bow limbs and use rubber bands or rubber tubes. It comes with three different limb lengths and three different barrel lengths, although what I have seen being used in the video is an extra-long barrel. You can print it with a default stock, without stock, or with an AR-style stock brace. It also comes with an option for 6, 8, 10, and 12mm ball diameters. I used a regular PLA+ and the gun is plenty sturdy.
@chasejdmartin mine is quite accurate, though I don't use any barrel at all, as it didn't print well and needs some filing from the inside, the bridges printed with huge overhang thus making the barrel too tight.
It would be interesting to optimize it for 6mm tungsten balls, those could have some serious point-blank penetration. Maybe tungsten-carbide-Cobalt for the 8mm ball as it doesn't need to be as dense, and just hardened lead for the 10mm one.
I regained an interest in slingshots and slingbow hunting and I Even modified my slingshot to have a bolt on whisker biscuit mount. Keep it up Joerg! You are an inspiration to slingshot enthusiasts and engineers everywhere!
1:10 Hexagonal barrel probably has less surface area contact with the ball, thus doesn't reduce power, doesn't create as much friction. And also lets air move more freely so that air doesn't create much resistance to the ball (like a train moving through the tunnel, you know that "wind" aka air that train is pushing, it makes train slower and consume more fuel or electric energy, like being slowed by parachute)
I think that the hexagon (or a square, or plenty of other shapes) should oriented with air gaps above and below the ball, so that when the ball is pushed up or down (which is inevitable, due to gravity or the string's positioning) inside the barrel it gets centered
Joerg, you bring a smile to my face everytime i hear you chortle. You are like a 10 year old in a candy shop with 2 dollars to spend. Keep up the great work
this is the first video I’ve watched by Jorge in well over a year and I wasn’t disappointed. For some reason the UA-cam algorithm rarely suggests videos from Jorge like it used to a few years ago.
The hexagonal internal shape of the barrel probably reduces friction - there are only six tiny points of contact with the ball, instead of being in contact all the way around.
Great video. Always enjoy your reviews. When I still lived in Russia as a kid we used to make our own slingshot guns. A little similar to this but rubber band instead of bow. We would make the barrel out of plastic pipes and used ball bearings from T-34 tanks because we lived next to a tank factory and there were tank parts all over the place at a dump behind the factory. We would jump the fence and steal all kinds of tank parts before the soldiers noticed us. Hahaha
The hexagonal barrel is actually clever as it would reduce the friction between the ball and barrel unlike a gun where the bullet needs be sealed around the barrel to build up pressure
@@Etherion195 no, you are. Do a simple web search. Increased surface area does help with heat dissipation and material lifespan, though, if there was constant barrel use.
@@AuxiliaryPanther Nope, i'm not. what he described is the theoretical concept of "friction force", which is really not all that relevant in a practical context at all. just some very simple example that proves the theoretical concept wrong: Going down a water slide. The key to go down the fastest is by only touching the ride with 3 points of your body instead of the whole body. If the area of contact was in any way irrelevant, every single way to go down the slide would be equally fast, but it isn't. The above mentioned "friction" is NOT the same as the theoretical concept of "friction FORCE".
Being the fact I am a multi generational U.S. military person with years of shooting experience ( started at 7 years old and am currently in my 60's ) It will definitely get the job done ! Good work !
I think you are a very fortunate man being able to have one of these weapons/adult toy! I would be using it for squirrel and rabbit hunting! Again thank you for sharing with us!
Joerg. I think the accuracy is Amazing! At that distance, its deadly! Having said that, i think it could be moved back a few yards with the same potential. You've changed the face of the game my friend! World Wide!
I downloaded it and the only fllaw that I see is that you need a BIG 3d printer for it with a 300m bed. That exceeds the size of most printers, including mine. It would be great to see an update that covers that by splitting the large body pieces into two parts
If you change the orientation of the longest parts of the 300x300mm version to 45 degrees, you can print this on 250x250mm just fine. I have no issues with stability on my SlingHammer.
your positive attitude and genuine laughter brightens my day . Thank you for continuing to put videos out on this channel despite the time it must consume from your daily life.
interesting for sure. i have watched you once in a while for years. you deserve much credit for developing these weapons as you are inspiring many. i saw you take a ball to your scalp that nearly scalped you. Kudos to you for sticking with it after that.
Great looking crossbow!! It appears to "cam over" and lock shut upon closing like the handles on a set of vice grip locking pliers. That's an excellent design and requires precision in manufacture I'm sure.
Very cool looking crossbow! I am definitely going to print it! thank you so much for your videos! (for the steel balls making that noise I think it can use some fabric on the walls inside) but it's a beauty! great job excellent!!
Jeorge sprave! Im happy to see you on my youtube feed again, ive been wayching you since 2010 and just like every video I've all enjoyed it. Hope to see more fun videos from you boss!
Tru German high tech performance. Well done Kevin... I just love your creativity. Very nice. Wouldn't mind to have one. Yes, I don't want to stand in front of that little canon.... Well done.... ........
@@S.M.E.A.C 12mm steel ball weights 7 gramms. The bolts, even short pistol-like, are 15g and up (excluding Chinese cheapo plastic mocks which never hits a target and obliterates on impact)
@@shurmurray My 6.3" pistol crossbow bolts are as light as 8-11g depending on the material and the tip. I have both alu + plastic vanes and carbon + steel tip and even some with hardened steel bodkin tips. With the shorter draw on the SlingHammer it probably evens out. Unfortunately I miss the gadgets to measure the velocity of the balls firing from my piece, so I have no clue how much Joule they have.
Joerg - being in the US the $ Thanks button wont' accept my PayPal or payment card to send $ as thanks for your efforts. Your vids are always informational and your jokes with the "HA HA HA" are a riot!
That's 10.33 KE, which will deal with small varmints with a hit to the head, within 20 yards range. 20 jules = 14.75 KE. 14 cm to inches = 5.5". Thanks for showing, Joerg. It looks quality, lightweight and of the rate of accu. And using West System G- Flex 650, probably sinu can be glued to the prod (bow) backside (the face closest to the target) to increase the draw power some.
I always enjoy academic banter with my fellow armchair PhDs. God only knows how many years worth of borderline fanatic antics on video they have in the vault!
Currently printing one from ABS-CF and normal ABS. Bought the plans ages ago, and acquired a new printer that can handle the fancier filament with ease. Cheers to plonking targets
If you want more accuracy and a little more range at the cost of velocity , you could put a tiny little bit of rubber that touches the top of the ball bearing before exiting the barrel like a airsoft hop up unit
This has been already discussed as the first designs for 3D-printed guns came out. So far they didn't succeed banning those machines as they are so universal you would do much more harm than god with the ban. Let's hope it stays that way.
best of wishes on that my friend. im in the u.s. but can only own airguns and black powder because i got in trouble as a youth. i hope to one day see germans taking deer and big game again. i dont like seeing people disarmed. its not right.
I like these "stone bow" concepts, but I'd like to see some that are optimized for small game hunting. Nothing wrong with tacticool, but some hunting-minded builds would be nice. Or maybe some type of quick conversion kit that turns a deer hunting crossbow into ball bearing thrower so you can use it for small game/pest control on the off-season.
I think the inventor did not have this in mind as hunting in germany is only allowed with firearms (afaik, no bows for shure, crossbow I'm not 100% sure) and he is from here.
You don't really want a round barrel on anything that isn't relying on sealing in pressure behind the projectile; hexagon's good, square would be better. A round barrel properly sized to fit a spherical projectile will have the ball touch the walls all around its circumference, a sphere in a square barrel will only touch the walls at 4 points, center of each flat side; you get the same direction stabilizing effect, with far less friction. A round barrel that's larger than the projectile will have it rattle around, bounce around from wall to wall, maybe obtain spin in a random direction.
Currently printing the 10mm version as we speak! It was this review Joerg that convinced me to buy the files and print it out. Can’t wait to finish it.
Saw you pop up on Reddit and I just want to say that your enthusiasm and jovial, well, everything, has been so incredibly refreshing. If absolutely nothing else, I'll be sticking around to see more of that smile and hear more of that laugh!
I absolutely love your laughter... I have the "cobra" model, and I make my own bolts. Some ones for rat control (they are pretty big), some ones for hunting, and otrhers fir self-defense.
@@Lesaucissondujour you forget that some of us will pay alot of money for convenience if it means we get a reliable long lasting product out of it. i'd rather not have to spend days fine tuning a 3d printer so it can produce a flimsy plastic prototype that will fall apart in a few months at best. even if im only paying a few bucks for the files needed to print it.
I'm Absolutely loving it. And thank you for testing the 12 mm version m. I wish the designer could make a version with same design but a bit shorter barrol for easier transport. Is this a foldable stock?
I just moved to FL from michigan, it's been legal in michigan for a while now and I tell you so many people are able to work jobs and remain calm and medicate without worry of cost for med cards . The general public is alot more mellow and other businesses are thriving
Das ist echt ein geiles Teil, vor allem da es aus einem 3D Drucker ist. Wie ist eigentlich der aktuelle Stand von deinem entworfenen Automatikmesser und dem Pocket-Filetiermesser @JoergSprave
That's nice looking, an as far as the balls rolling, cut to fit an glue some felt inside area holding the balls. Felt will cut down metal on plastic sound an you need to felt the sides inside too. Before you glue it inside compartment try double sided tape on felt. I'm sure it will make a huge difference in sound quality an remove the steel on plastic sound rolling around. Another nice video buddy. I was thinking about when you were making another video soon the other day. Happy to see you are doing well and still have that laugh. Only thing missing was you slapping the ballistic gel an putting piece of leather or cloth on it doing a test, maybe that's next test for this bow. Thanks buddy.
NOT ONLY FOR HIS STRONG PHYSICAL RESEMBLANCE, BUT ESPECIALLY FOR HIS MENACING TONE OF VOICE AT THE START AND HIS HEARTY, EVIL LAUGH, THIS GUY REMINDS ME OF ACTOR ALBERT DEKKER AS MAD SCIENTIST "DR. CYCLOPS," THE 1940 SCIENCE FICTION FILM. WATCH THE MOVIE, SEE IF YOU AGREE WITH ME.
I made mine with TheraTube Silver 6mm doubled and 12mm caliber, works great. Didn't had the opportunity to shoot it at longer distances but on short, it goes through 20 sheets of paper with ease and then digs into my hard target foam. Got an Adder 90lbs arm here, maybe I put this in for a change. Also want to print the newer version with a longer draw, after my Bambu Lab X1C arrived, as this would take too long on the Geeetech printer I already have. Hint for the ammo: If you want to use dissovable ammo which you do not have to search for in your garden, there are mud balls available up to 10mm. In that case, your better option is with smaller calibers.
That's awesome to see working correctly! Quick thought: To overcome the friction of a rifled barrel, would it be possible to use a typical spring & piston driven airgun system using the crossbow powerstroke to fill the chamber and have the little bump valve on the back end? Beef that up a bit and use the 'dieseling' method for a bit more power if needed?
Ein köstliches Männerspielzeug , und Hut ab vor dem fleißigen und pfiffigem Konstrukteur !!! Ebenso danke einmal mehr fürs Vorstellen, werter Jörg Sprave. Frage: wird es das Teil demnächst zu kaufen geben ? Servus
in my opinion, there is a simple way to eliminate the sound of the metal balls in the reservoir: having a spring to push them together, as well as make it possible to "rechamber" in any direction
Question: What kind of technical difficulties would need to be overcome to make a short-arm version of this setup whilst still getting the power it currently has with each shot?
I think there are some simple ways to add power to this design out in the field or in the home shop by either adding another metal spring plate behind the bow or even using rubber bands in some way, I will let Joerg think of something for that.
Nice weapon. I've never seen one of those before. I like how the rate of fire is so much more than a conventional crossbow. That's handy when the Indians are charging!😀
Joerg's channel has revolutionized the crossbow and archery . Nothing changed for thousands of years until he got interested in sling shots . Well done Joerg.
"Nothing changed for thousands of years " This is complete nonsense, i don't know if it's coming out of sheer ignorance or sheer fandom, but it's completely wrong.
It's rumored he was the first to invent them and created a time machine from a few scrap pieces of mdf, plywood, screws and rubber bands. He then shot his invention into the past at light speed to help our ancestors out! True story! It has to be, it's on the internet.
Fantastic Joerg, your vids are always entertaining.
@@Narcan885 complete ignorance of archery, no doubt
@@Narcan885 - or they're being hyperbolic to pay a compliment in a grandiose manner.
Anything that makes Joerg laugh like that, is a gift to us viewers. ✌️
I love his laugh 😆
Ya Know!!! It's his laugh that actually made me start watching him in the 1st place.. 🤘🏽
Bought it and printed it. It is worth mentioning that the design contains an option to print bow limbs and use rubber bands or rubber tubes. It comes with three different limb lengths and three different barrel lengths, although what I have seen being used in the video is an extra-long barrel. You can print it with a default stock, without stock, or with an AR-style stock brace. It also comes with an option for 6, 8, 10, and 12mm ball diameters. I used a regular PLA+ and the gun is plenty sturdy.
I printed it its not accurate at all! I don't think there's the option for the barrel shop in this video.
@chasejdmartin mine is quite accurate, though I don't use any barrel at all, as it didn't print well and needs some filing from the inside, the bridges printed with huge overhang thus making the barrel too tight.
chasejdmartin-learn how to print. The design is fine.
@@S.M.E.A.C I know how to print. I not talking bout the print/model accuracy. I'm taking about shot to shot consistency.
It would be interesting to optimize it for 6mm tungsten balls, those could have some serious point-blank penetration. Maybe tungsten-carbide-Cobalt for the 8mm ball as it doesn't need to be as dense, and just hardened lead for the 10mm one.
I regained an interest in slingshots and slingbow hunting and I Even modified my slingshot to have a bolt on whisker biscuit mount. Keep it up Joerg! You are an inspiration to slingshot enthusiasts and engineers everywhere!
What a great piece of design and engineering. Excellent.
Thank you very much!
@@Slingshotchannel please keep us updated if he releases the over 20 jul version i would love to see it in action and see what it can go through
@@Slingshotchannel Where can you buy it?
@@Slingshotchannel 3Dprinter , link pleas!!! Tnx
@@jwcooley6136 he doesnt need to buy it, he got it free from the inventor, in order to do some publicity for him...
Ich liebe diesen Kanal und Armbrust nutzen würde ich auch sehr gerne
1:10 Hexagonal barrel probably has less surface area contact with the ball, thus doesn't reduce power, doesn't create as much friction. And also lets air move more freely so that air doesn't create much resistance to the ball (like a train moving through the tunnel, you know that "wind" aka air that train is pushing, it makes train slower and consume more fuel or electric energy, like being slowed by parachute)
also "future proofs" it
Probably prints better too
Ok, came here to ask about this source of drag. But why have the barrel, hex or not? Is it just for hanging tacticool tech?
I think that the hexagon (or a square, or plenty of other shapes) should oriented with air gaps above and below the ball, so that when the ball is pushed up or down (which is inevitable, due to gravity or the string's positioning) inside the barrel it gets centered
@@S.M.E.A.C Sure as shit looked hex inside...
I can't express how much I love this channel. So much creativity all the time, I'm always impressed by these clever designs.
Joerg, you bring a smile to my face everytime i hear you chortle. You are like a 10 year old in a candy shop with 2 dollars to spend. Keep up the great work
As a 3D printed gun guy, I think it’s awesome that people are also making other types of launchers as well. Always keep up the fun and the freedom!
Only Trump can give us freedom
You have as much freedom as you give yourself, it’s your own choice to give your freedom to the government. (No, I do not like Boe Jiden either)
How did you learn or where did you find tbe print to do what you do?
They'll be outlawed before long
They are already outlawed, free men don’t ask
this is the first video I’ve watched by Jorge in well over a year and I wasn’t disappointed. For some reason the UA-cam algorithm rarely suggests videos from Jorge like it used to a few years ago.
It looks wild ! thanks joerg for being such a driving force behind all this innovation , you rock !!! take care
Recently found you again and you bring back so much childhood nostalgia.
Im glad this channel is still in service : ]
Thanks!
The hexagonal internal shape of the barrel probably reduces friction - there are only six tiny points of contact with the ball, instead of being in contact all the way around.
Love your laugh. Pure joy. You're a great shot too. Loved your video 😗
Great video. Always enjoy your reviews. When I still lived in Russia as a kid we used to make our own slingshot guns. A little similar to this but rubber band instead of bow. We would make the barrel out of plastic pipes and used ball bearings from T-34 tanks because we lived next to a tank factory and there were tank parts all over the place at a dump behind the factory. We would jump the fence and steal all kinds of tank parts before the soldiers noticed us. Hahaha
I would absolutely love to see this designed with the "coilspring" style in mind, like with the Lancehead.
Please make a video as you go along.
The hexagonal barrel is actually clever as it would reduce the friction between the ball and barrel unlike a gun where the bullet needs be sealed around the barrel to build up pressure
@@ioann235 well, you are straight up wrong.
@@Etherion195 no, you are. Do a simple web search. Increased surface area does help with heat dissipation and material lifespan, though, if there was constant barrel use.
@@AuxiliaryPanther
Afther Looking my Glock barrel & i stand with you 👍
@@AuxiliaryPanther Nope, i'm not. what he described is the theoretical concept of "friction force", which is really not all that relevant in a practical context at all.
just some very simple example that proves the theoretical concept wrong: Going down a water slide. The key to go down the fastest is by only touching the ride with 3 points of your body instead of the whole body.
If the area of contact was in any way irrelevant, every single way to go down the slide would be equally fast, but it isn't.
The above mentioned "friction" is NOT the same as the theoretical concept of "friction FORCE".
@@ioann235 yes it does
Being the fact I am a multi generational U.S. military person with years of shooting experience ( started at 7 years old and am currently in my 60's ) It will definitely get the job done ! Good work !
Loved your work ever since where making your own.
Hope u get every bit of out of life your looking for.
Wish you all the best in future endeavors.
It's an impressive piece of hardware thanks for showcasing it !!
I think you are a very fortunate man being able to have one of these weapons/adult toy! I would be using it for squirrel and rabbit hunting!
Again thank you for sharing with us!
Would be cool to see some ballistic gel tests with this and possibly the more powerful version? Love the videos Jorg.
Joerg. I think the accuracy is Amazing! At that distance, its deadly! Having said that, i think it could be moved back a few yards with the same potential. You've changed the face of the game my friend! World Wide!
I downloaded it and the only fllaw that I see is that you need a BIG 3d printer for it with a 300m bed.
That exceeds the size of most printers, including mine.
It would be great to see an update that covers that by splitting the large body pieces into two parts
Just saw that he did that alrerady 3 weeks ago, shame on me and kudos to the inventor
@@BRG92 But the 300mm Version does fit on my 240mm bed when turned 45 degrees...
There is an 220x220 Version in the latest Update!
If you change the orientation of the longest parts of the 300x300mm version to 45 degrees, you can print this on 250x250mm just fine. I have no issues with stability on my SlingHammer.
Great to see you so enthusiastic! I am loving it!
I still always love the way you laugh.....
Even Chewbacca would approve of this beautiful design!
( Love these videos and that laugh ALWAYS cheers me up!)
i love how it looks! and the sound of the gun is really gold
NEIN , not a gun
@@bravojr right
Not in to crossbows myself but this is the first one I've seen that makes me reconsider. Absolutely in love with that design!
your positive attitude and genuine laughter brightens my day . Thank you for continuing to put videos out on this channel despite the time it must consume from your daily life.
That is just sheer excitement. Good find. Thanks for telling us about it too. And yes that thing looks amazing
interesting for sure. i have watched you once in a while for years. you deserve much credit for developing these weapons as you are inspiring many. i saw you take a ball to your scalp that nearly scalped you. Kudos to you for sticking with it after that.
Great looking crossbow!! It appears to "cam over" and lock shut upon closing like the handles on a set of vice grip locking pliers. That's an excellent design and requires precision in manufacture I'm sure.
Oh man, bet this prints great on my Bambu Lab Carbon X1. I love the video, especially when Joerg laughs. Love seeing a guy enjoy his shooting.
Very cool looking crossbow! I am definitely going to print it! thank you so much for your videos! (for the steel balls making that noise I think it can use some fabric on the walls inside) but it's a beauty! great job excellent!!
Where you find the stl?
Jeorge sprave! Im happy to see you on my youtube feed again, ive been wayching you since 2010 and just like every video I've all enjoyed it. Hope to see more fun videos from you boss!
Very nice build, big respect from me.
I’ve already started printing the parts. Thanks for another great video.
That’s super cool and the fact you can print it at home is amazing, 3D printers have changed a lot of stuff.
Holy shit,i remember your videos from when i was younger trying to make a sling shot. Glad to see how far youve come since then.
That's some awesome power from that crossbow!
That is seriously badass
I love it (the look, function, everything)
Wish I could buy one
That looks amazing and definitely cheers for sharing the link to where to buy the files :D
Tru German high tech performance. Well done Kevin... I just love your creativity. Very nice. Wouldn't mind to have one. Yes, I don't want to stand in front of that little canon.... Well done.... ........
Using compound bow may greatly help with initial velocity with those lightweight (in comparison to arrows) balls.
10gm ball is the same as a standard bolt.
@@S.M.E.A.C 12mm steel ball weights 7 gramms. The bolts, even short pistol-like, are 15g and up (excluding Chinese cheapo plastic mocks which never hits a target and obliterates on impact)
@@shurmurray My 6.3" pistol crossbow bolts are as light as 8-11g depending on the material and the tip. I have both alu + plastic vanes and carbon + steel tip and even some with hardened steel bodkin tips. With the shorter draw on the SlingHammer it probably evens out. Unfortunately I miss the gadgets to measure the velocity of the balls firing from my piece, so I have no clue how much Joule they have.
Joerg - being in the US the $ Thanks button wont' accept my PayPal or payment card to send $ as thanks for your efforts. Your vids are always informational and your jokes with the "HA HA HA" are a riot!
That's 10.33 KE, which will deal with small varmints with a hit to the head, within 20 yards range.
20 jules = 14.75 KE.
14 cm to inches = 5.5".
Thanks for showing, Joerg. It looks quality, lightweight and of the rate of accu.
And using West System G- Flex 650, probably sinu can be glued to the prod (bow) backside (the face closest to the target) to increase the draw power some.
I hope he can get it to 50 Jules if it's legal
I always enjoy academic banter with my fellow armchair PhDs. God only knows how many years worth of borderline fanatic antics on video they have in the vault!
Currently printing one from ABS-CF and normal ABS. Bought the plans ages ago, and acquired a new printer that can handle the fancier filament with ease. Cheers to plonking targets
Love your content
Hey Joerg. That's certainly a fine piece of machinery.
If you want more accuracy and a little more range at the cost of velocity , you could put a tiny little bit of rubber that touches the top of the ball bearing before exiting the barrel like a airsoft hop up unit
3:35 "Outlawing crossbows is really stupid, because all you need is a 3D printer". German government's response " let's ban all 3D printers"
This has been already discussed as the first designs for 3D-printed guns came out. So far they didn't succeed banning those machines as they are so universal you would do much more harm than god with the ban.
Let's hope it stays that way.
Love the look of this thing. I always wanted to do archery and now this has stirred my interest. Thanks.
excellent video .. always a pleasure to hear your excitement .
We are getting closer and closer to making Monster Hunter-style Bowguns and I'm all up for it
best of wishes on that my friend. im in the u.s. but can only own airguns and black powder because i got in trouble as a youth. i hope to one day see germans taking deer and big game again. i dont like seeing people disarmed. its not right.
Super cool he's giving out the design essentially for anyone who can print it
I like these "stone bow" concepts, but I'd like to see some that are optimized for small game hunting. Nothing wrong with tacticool, but some hunting-minded builds would be nice. Or maybe some type of quick conversion kit that turns a deer hunting crossbow into ball bearing thrower so you can use it for small game/pest control on the off-season.
I think the inventor did not have this in mind as hunting in germany is only allowed with firearms (afaik, no bows for shure, crossbow I'm not 100% sure) and he is from here.
Bonus points if it's done up like one of the bowguns from Monster Hunter.
100% enthusiasm ! gotta love it ...and the crossbow is cool . Dave NZ
You don't really want a round barrel on anything that isn't relying on sealing in pressure behind the projectile; hexagon's good, square would be better. A round barrel properly sized to fit a spherical projectile will have the ball touch the walls all around its circumference, a sphere in a square barrel will only touch the walls at 4 points, center of each flat side; you get the same direction stabilizing effect, with far less friction. A round barrel that's larger than the projectile will have it rattle around, bounce around from wall to wall, maybe obtain spin in a random direction.
Currently printing the 10mm version as we speak! It was this review Joerg that convinced me to buy the files and print it out. Can’t wait to finish it.
The Germans always make quality things. 👌
Saw you pop up on Reddit and I just want to say that your enthusiasm and jovial, well, everything, has been so incredibly refreshing.
If absolutely nothing else, I'll be sticking around to see more of that smile and hear more of that laugh!
I absolutely love your laughter...
I have the "cobra" model, and I make my own bolts.
Some ones for rat control (they are pretty big), some ones for hunting, and otrhers fir self-defense.
be nice if this was made into a commercial product
I think I’m going to bide my time a bit and wait for that day!
You can always make friends with a guy that has a printer maybe.
It's better than commercial.
Honestly. What's missing?
@@rooroo9216 It's free, printable. Better than commercial.
@@Lesaucissondujour you forget that some of us will pay alot of money for convenience if it means we get a reliable long lasting product out of it.
i'd rather not have to spend days fine tuning a 3d printer so it can produce a flimsy plastic prototype that will fall apart in a few months at best. even if im only paying a few bucks for the files needed to print it.
Very effective and attractive design! GREAT JOB!!!
I'm Absolutely loving it. And thank you for testing the 12 mm version m.
I wish the designer could make a version with same design but a bit shorter barrol for easier transport. Is this a foldable stock?
This is very professionally produced and a source if excellent information.
I just moved to FL from michigan, it's been legal in michigan for a while now and I tell you so many people are able to work jobs and remain calm and medicate without worry of cost for med cards . The general public is alot more mellow and other businesses are thriving
Das ist echt ein geiles Teil, vor allem da es aus einem 3D Drucker ist.
Wie ist eigentlich der aktuelle Stand von deinem entworfenen Automatikmesser und dem Pocket-Filetiermesser @JoergSprave
Why do I want to sing “Panzerlied” when you talk?😂😂. I love your channel.
What practical effect does the barrel have?
the evil laugh after hitting the target! pure satisfaction! awesome crossbow!
how expensive of a 3d printer do i need to print this?
Dude, I love your laugh after every shot 😆
That's nice looking, an as far as the balls rolling, cut to fit an glue some felt inside area holding the balls. Felt will cut down metal on plastic sound an you need to felt the sides inside too. Before you glue it inside compartment try double sided tape on felt. I'm sure it will make a huge difference in sound quality an remove the steel on plastic sound rolling around. Another nice video buddy. I was thinking about when you were making another video soon the other day. Happy to see you are doing well and still have that laugh. Only thing missing was you slapping the ballistic gel an putting piece of leather or cloth on it doing a test, maybe that's next test for this bow. Thanks buddy.
NOT ONLY FOR HIS STRONG PHYSICAL RESEMBLANCE, BUT ESPECIALLY FOR HIS MENACING TONE OF VOICE AT THE START AND HIS HEARTY, EVIL LAUGH, THIS GUY REMINDS ME OF ACTOR ALBERT DEKKER AS MAD SCIENTIST "DR. CYCLOPS," THE 1940 SCIENCE FICTION FILM. WATCH THE MOVIE, SEE IF YOU AGREE WITH ME.
I made mine with TheraTube Silver 6mm doubled and 12mm caliber, works great. Didn't had the opportunity to shoot it at longer distances but on short, it goes through 20 sheets of paper with ease and then digs into my hard target foam.
Got an Adder 90lbs arm here, maybe I put this in for a change. Also want to print the newer version with a longer draw, after my Bambu Lab X1C arrived, as this would take too long on the Geeetech printer I already have.
Hint for the ammo: If you want to use dissovable ammo which you do not have to search for in your garden, there are mud balls available up to 10mm. In that case, your better option is with smaller calibers.
That looks like a whole lotta fun.
That's awesome to see working correctly! Quick thought: To overcome the friction of a rifled barrel, would it be possible to use a typical spring & piston driven airgun system using the crossbow powerstroke to fill the chamber and have the little bump valve on the back end? Beef that up a bit and use the 'dieseling' method for a bit more power if needed?
No.
I’ve been following you since 2016 and i just like the fact that you are still uploading much respect to you man 🙏
Ein köstliches Männerspielzeug , und Hut ab vor dem fleißigen und pfiffigem Konstrukteur !!! Ebenso danke einmal mehr fürs Vorstellen, werter Jörg Sprave. Frage: wird es das Teil demnächst zu kaufen geben ? Servus
Hallo
Würde mich auch interessieren weil ich besitze kein Drucker. Wer was weiß wo sie was gibt melden.
Meine Bestellung wäre auch direkt raus.
Stell mich mit hinten an 👍
in my opinion, there is a simple way to eliminate the sound of the metal balls in the reservoir: having a spring to push them together, as well as make it possible to "rechamber" in any direction
Question: What kind of technical difficulties would need to be overcome to make a short-arm version of this setup whilst still getting the power it currently has with each shot?
Joerg , love your chanel! Keep on making great content and crazy stuff!
That is sweet. Would be a nice addition to my less-than-lethal collection. Gonna have to try and get this!
....Joerg.....your endorsement is good enough for me Sir .....much admiration from an old "Jack of all trades." BC Ca.
Hello Jorge you Deutschland dudes sure can use your very talented skills. A great piece of heavy power.
Joergs love your enthusiasm AND KNOLEDGE
Wow, that's a sweet crossbow, nice shooting too.
Wow, it is an amazing piece of workmanship!!!
That was just beautiful to watch, well done.
I think it's sweet I could definitely picture myself plinking around with one of those
3D printing has been a real gift.
That evil laugh after every shot
Hahahahaaaa💀
That is unreal, you make brilliant videos mate
I think there are some simple ways to add power to this design out in the field or in the home shop by either adding another metal spring plate behind the bow or even using rubber bands in some way, I will let Joerg think of something for that.
Nice weapon. I've never seen one of those before. I like how the rate of fire is so much more than a conventional crossbow. That's handy when the Indians are charging!😀