Usually you need to sinter the printed piece which makes it complicated. You can already print metal guns but it's very expensive and much more work than you might be thinking unlike plastic 3d which cheap and dead simple
You need to flood the chamber with argon like your rig welding, spread special titanium dust, uses a laser to temporarily adhere titanium dust to other layers
Then you break off the supports and clean the excess trapped titanium powder
as i understand it sintering is like firing pottery in a kiln. for machining bits like a tungsten carbide cutter the TC powder is pressed into its shape and then sintered in a kiln, the resulting piece shrinking down some % to its final size
soldering = two things get glued together
welding = two things get pushed together until they stick, glue optional
sintering = melt 200 little things and let the puddle cool into 1 thing
By definition welding uses the base materials, heats them up to the point of fusion, and they become continuous. A process like for example spot welding takes the two pieces you want to join and creates a pocket of fused materials. When you use rods or wire you're adding a filler material to bridge a gap between metals.
Soldering joins two pieces of a base material with a different metal which has a lower melting point. The solder is heated up to its fusion temperature but the base material isn't.
Sintering is a process where you can take powdered metal and a binder, create a part out of this powder, and then heat it up until the grains start bonding. Since the heat does not achieve fusion temperature your metal doesn't turn into a puddle so the shape is retained (but shrinkage occurs), allowing you to manufacture complex parts while the metal is easily worked in powder form, and then your final part is made out of solid metal without requiring casting, forging or machining from stock. But it is not a simple process and improper sintering results in the famous "MIM parts" that people complain about in Sigs and 1911s.
NTA but I've been looking into it for potentially starting a suppressor company. Minimum buy in for anything titanium is around 120k, usually 60-80k for the machine and an additional 40k for after process/heat treating.
And that's for one machine printing.
Not including the absurdly high cost of the powders.
Strictly talking true metal printing, not shit embedded FDM.
That single event exposed how easy it can be and what a farce gun control is. Black powder from fireworks, a cigarette lighter, steel balls, steel pipes, tape, and a piece of wood. I'm shocked we're not seeing more of that design in use. You could even set them up in a multiple barrel array or have multiple pistols in a pirate bandolier.
The means to kill are very common, the motivation to do so is what's much rarer. Ask yourself why Shinzo Abe would have to be shot and why the world press/governments cared so little when it happened.
2 weeks ago
Anonymous
Yeah well no one's shitting up every discussion of home made weapon designs going "what am I supposed to do with this you cant even print me a [will to combat my enemies]"
You are right in that even before 3d printing or electric pipe guns there was nothing stopping the non American from arming himself with a home made musket or crossbow or bomb or even jumping through the hoops of legal ownership in his shithole, and that his whining and b***hing about having no access to guns was always just excusing himself, but this, at least, gives more ammunition to shut his perennial canned replies the frick up.
The fact is noguns from nogunsistan like to comfort themselves as life gets worse and worse saying "I would if I could, I'm better than Americans because they have guns but don't revolt, but if I had a gun I'd tear this whole fricker down", and they'll ignore any path to actually getting that gun.
Idea. >direct blowback >ignition has two breaks in the circuit >one on the trigger >one on the front of the bolt >both inline on circuit >when circuit closes, discharge into chamber
Gentlemen, I present the electric luty.
Well, 3D printers don't leave smooth surfaces, so no. And this particular material wouldn't be of much help for guns anyway.
this. And it would be objectively terrible for making anything bearing pressure. This is just having a printer leave hollow voids in a part. Basically printing an ordered sponge instead of solid materials. That would create endless possible failure points in a sharply stressed part.
You wouldn't need to, its for larger structures. Small stuff can be made od solid metal because it's not heavy enough to justify making it a semi hollow structure.
Strength to weight ratio.
Same shit as your bones having higher "strength to weight ratio" as steel. It's true, because steel is denser than bone. But a gun made out of bone wouldn't perform better because for a given thickness the steel will handle higher stresses. Just at the cost of higher weight.
The reason they're boasting about this structure is that the loss in structural strength by leaving those voids will be minimal despite the weight savings being massive. It's similar to how a steel I-beam uses moment of inertia of the web to get almost the same resistance to bending as a solid square rod of steel, but while weighing a fraction of the mass. The only issue with I-beams is that they only work by bending against the web, while this structure is probably omnidirectional.
Drilling the frick out of a titanium rod would be nonsensical. 3d printing allows you to just build the structure and not spend material on the voids that you'd have to machine out.
They have been at this shit since the late 90's. Boeing got a bunch of money for a reverse Doppler metamaterial polymer coating in 2001. God knows what they've been working on if your seeing news articles about this.
If you have a drill press& a lathe and the goal is to make a firearm at home, you would never ever need to machine anything resembling the object in OP's pic. Stay on topic, kiddo
There was a German guy here once who was training to be a professional gunsmith and built high-quality hunting side by sides.
I didn't care for him though because he didn't want to sell guns to Americans.
I have NC autism, CNC punched tape in particular, but I don't have access to real machines beyond CNC simulators and my own punchers/readers.
Still seems to me that if you have access to lathes and CNC machines, building guns should be ez.
How is a 3D printer so different? Except maybe cutting down material instead of building up material.
The eternal issue with using 3D printing for fine manufacturing is layer lines. Every time you try to print a curved surface, and even smooth ones to an extent, it looks like a vidya with anti-aliasing turned off. There are no TRUE curves, just arbitrarily fine stepped layers.
sure, but you want phase continuity and strong phases
you know that discontinuity is where the break is going to start, that's why annealing is so important
>if you have access
that's the crux of the issue
the investment in machinery, workspace, training, and power is outside the realm of 99.9% of the enthusiasts who are autistic enough to be into this sort of thing
My thought is that with mature enough 3D printing tech you can print whatever you want off a easily shared infinitely reproducible design with much less cost. no skill or legal barrier. That's the dream anyways.
Metal 3D printing is nothing new. It has been viable to 3D print a whole gun for years now. The machines are very expensive
When people talk about 3D printed guns, they mean ones made using FDM and things you can buy at a hardware store (which includes most the parts of an FDM printer)
I just don't think this shit is that interesting. Guns are not that complicated, you can just mill out AR receivers, stamp AK receivers, etc. This thing can't make barrels, so who cares? Fully printed out of polymer at home with a few hundred dollars of equipment is a worthy goal, but if you're talking about stuff like this just learn how to be a machinist. The equipment will be cheaper, and the result will be far better. Guns were made with hand tools for most of their existence.
>rmit
Pajeet on an education visa? That would explain the lack of enough cultural sense to post source, and the otherwise terrible OP. I assume that counts for a lot of this shit around here.
Firearms companies are stagnation incarnate, they aren't gonna drop money on SLS printers even if they were comparable in cost to their current manufacturing.
Usually you need to sinter the printed piece which makes it complicated. You can already print metal guns but it's very expensive and much more work than you might be thinking unlike plastic 3d which cheap and dead simple
>you need to sinter
I never thought about it but now I have
>welding
>soldering
>sintering
What's the difference?
Metal 3d printers work weird,
You need to flood the chamber with argon like your rig welding, spread special titanium dust, uses a laser to temporarily adhere titanium dust to other layers
Then you break off the supports and clean the excess trapped titanium powder
Post process and sinter the part
as i understand it sintering is like firing pottery in a kiln. for machining bits like a tungsten carbide cutter the TC powder is pressed into its shape and then sintered in a kiln, the resulting piece shrinking down some % to its final size
soldering = two things get glued together
welding = two things get pushed together until they stick, glue optional
sintering = melt 200 little things and let the puddle cool into 1 thing
By definition welding uses the base materials, heats them up to the point of fusion, and they become continuous. A process like for example spot welding takes the two pieces you want to join and creates a pocket of fused materials. When you use rods or wire you're adding a filler material to bridge a gap between metals.
Soldering joins two pieces of a base material with a different metal which has a lower melting point. The solder is heated up to its fusion temperature but the base material isn't.
Sintering is a process where you can take powdered metal and a binder, create a part out of this powder, and then heat it up until the grains start bonding. Since the heat does not achieve fusion temperature your metal doesn't turn into a puddle so the shape is retained (but shrinkage occurs), allowing you to manufacture complex parts while the metal is easily worked in powder form, and then your final part is made out of solid metal without requiring casting, forging or machining from stock. But it is not a simple process and improper sintering results in the famous "MIM parts" that people complain about in Sigs and 1911s.
>Fully printable guns ?
You wouldn't be able to afford them.
>metal printers and metal powders are expensive...
fuddlore
NTA but I've been looking into it for potentially starting a suppressor company. Minimum buy in for anything titanium is around 120k, usually 60-80k for the machine and an additional 40k for after process/heat treating.
And that's for one machine printing.
Not including the absurdly high cost of the powders.
Strictly talking true metal printing, not shit embedded FDM.
The gun is the easy part. The hard part is the ammunition.
%3D
Electrical ignition, get with the fricking times grandpa.
>7 rounds in 22 seconds
lol
lmao
How many rounds did it take to kill Shinzo Abe, moron?
That single event exposed how easy it can be and what a farce gun control is. Black powder from fireworks, a cigarette lighter, steel balls, steel pipes, tape, and a piece of wood. I'm shocked we're not seeing more of that design in use. You could even set them up in a multiple barrel array or have multiple pistols in a pirate bandolier.
The means to kill are very common, the motivation to do so is what's much rarer. Ask yourself why Shinzo Abe would have to be shot and why the world press/governments cared so little when it happened.
Yeah well no one's shitting up every discussion of home made weapon designs going "what am I supposed to do with this you cant even print me a [will to combat my enemies]"
You are right in that even before 3d printing or electric pipe guns there was nothing stopping the non American from arming himself with a home made musket or crossbow or bomb or even jumping through the hoops of legal ownership in his shithole, and that his whining and b***hing about having no access to guns was always just excusing himself, but this, at least, gives more ammunition to shut his perennial canned replies the frick up.
The fact is noguns from nogunsistan like to comfort themselves as life gets worse and worse saying "I would if I could, I'm better than Americans because they have guns but don't revolt, but if I had a gun I'd tear this whole fricker down", and they'll ignore any path to actually getting that gun.
Shinzo wasn't laughing about it
>almost 19 rounds a minute
Now THATS soldiering
Idea.
>direct blowback
>ignition has two breaks in the circuit
>one on the trigger
>one on the front of the bolt
>both inline on circuit
>when circuit closes, discharge into chamber
Gentlemen, I present the electric luty.
Where there's a will there's a way.
Buying spent brass and reloading it with nailgun blanks still forces you to rely on easily traceable components.
This isn't much of a solution because its still reliant on an easy source of ammo materials.
Do love that spinning rat, tho.
look at the size of the matrix, you couldn't print anything small with that even if you could afford it.
Well, 3D printers don't leave smooth surfaces, so no. And this particular material wouldn't be of much help for guns anyway.
this. And it would be objectively terrible for making anything bearing pressure. This is just having a printer leave hollow voids in a part. Basically printing an ordered sponge instead of solid materials. That would create endless possible failure points in a sharply stressed part.
You can get used SLA printers for like $50 now. It's easy to print things that small these days, what's still hard is printing useful materials.
You wouldn't need to, its for larger structures. Small stuff can be made od solid metal because it's not heavy enough to justify making it a semi hollow structure.
Strength to weight ratio.
Same shit as your bones having higher "strength to weight ratio" as steel. It's true, because steel is denser than bone. But a gun made out of bone wouldn't perform better because for a given thickness the steel will handle higher stresses. Just at the cost of higher weight.
The reason they're boasting about this structure is that the loss in structural strength by leaving those voids will be minimal despite the weight savings being massive. It's similar to how a steel I-beam uses moment of inertia of the web to get almost the same resistance to bending as a solid square rod of steel, but while weighing a fraction of the mass. The only issue with I-beams is that they only work by bending against the web, while this structure is probably omnidirectional.
Drilling the frick out of a titanium rod would be nonsensical. 3d printing allows you to just build the structure and not spend material on the voids that you'd have to machine out.
They have been at this shit since the late 90's. Boeing got a bunch of money for a reverse Doppler metamaterial polymer coating in 2001. God knows what they've been working on if your seeing news articles about this.
Also, the author is a Black person and this is the loosest possible interpretation of "3-D printed" that you can imagine.
The hoops you homosexuals will jump to just to avoid learning real machining skills
Please describe how you would machine the object in OP's pic.
Bendy drill.
If you have a drill press& a lathe and the goal is to make a firearm at home, you would never ever need to machine anything resembling the object in OP's pic. Stay on topic, kiddo
Can't we already CNC guns???
the closest /k/ has to a gunsmith is that moron who welds random shit to his glock
no >we can't
There was a German guy here once who was training to be a professional gunsmith and built high-quality hunting side by sides.
I didn't care for him though because he didn't want to sell guns to Americans.
I have NC autism, CNC punched tape in particular, but I don't have access to real machines beyond CNC simulators and my own punchers/readers.
Still seems to me that if you have access to lathes and CNC machines, building guns should be ez.
How is a 3D printer so different? Except maybe cutting down material instead of building up material.
The eternal issue with using 3D printing for fine manufacturing is layer lines. Every time you try to print a curved surface, and even smooth ones to an extent, it looks like a vidya with anti-aliasing turned off. There are no TRUE curves, just arbitrarily fine stepped layers.
True curves don't exist, they're just 1 molecule stepped layers.
sure, but you want phase continuity and strong phases
you know that discontinuity is where the break is going to start, that's why annealing is so important
>if you have access
that's the crux of the issue
the investment in machinery, workspace, training, and power is outside the realm of 99.9% of the enthusiasts who are autistic enough to be into this sort of thing
Slamefire shotties and cobbled-together flintlocks are within the realm of feasability for the average slob, tbh
Yes and? I'm talking about proper firearms, not the shit you use to scam gun buybacks.
>How is a 3D printer so different?
My thought is that with mature enough 3D printing tech you can print whatever you want off a easily shared infinitely reproducible design with much less cost. no skill or legal barrier. That's the dream anyways.
I can cnc mill gun lowers
But it’s incredibly boring and tedious to do so.
Also it will cost me more to order a nice sized chunk of 6061-t6511 extruded bar and the sizes for fixturing
Than just buying a blemish palmetto state armory
Metal 3D printing is nothing new. It has been viable to 3D print a whole gun for years now. The machines are very expensive
When people talk about 3D printed guns, they mean ones made using FDM and things you can buy at a hardware store (which includes most the parts of an FDM printer)
>metamaterial terminology being used for clickbait
You have no idea how deep the rabbit hole for metamaterials goes.
Is that from Roswell?
How long until we can print nukes?
I just don't think this shit is that interesting. Guns are not that complicated, you can just mill out AR receivers, stamp AK receivers, etc. This thing can't make barrels, so who cares? Fully printed out of polymer at home with a few hundred dollars of equipment is a worthy goal, but if you're talking about stuff like this just learn how to be a machinist. The equipment will be cheaper, and the result will be far better. Guns were made with hand tools for most of their existence.
>rmit
Pajeet on an education visa? That would explain the lack of enough cultural sense to post source, and the otherwise terrible OP. I assume that counts for a lot of this shit around here.
Firearms companies are stagnation incarnate, they aren't gonna drop money on SLS printers even if they were comparable in cost to their current manufacturing.
Oh look another bot thread with a Reddit screencap
Metal 3D printing has been around for a while. The problem is SLS machines aren't anywhere near as accessible as FDM or SLA machines are.