3D Printed Projectiles (video at link)

Gun Watch ^ | 21 May, 2013 | Dean Weingarten

[marktwain]

In the video, the 3D printed projectile is made with a "honeycomb" type crossection, presumbably to conserve material.

[marktwain]

http://www.blogger.com/blogger.g?blogID=7877849#allposts/postNum=0

The video can be found at the link.

[Kevmo]

for the 3d printer ping list

Are they really trying to generate the ability to print bullets and cartridges?

[marktwain]

I think projectiles and cartridge cases could be printed with today's technology. Printing propellant and priming is a bit further off, but there are some clever ways around that, such as electrical ignition, and using precharged propane/butane and oxygen mixtures for possible propellants.

All of this is merely interesting, as criminal acquisition of conventional firearms is a bit easier, at least at present.

[nevergore]

Let me know when I can print a nuclear ICBM that I can fire from outer-space.....

And lasers for my sharks.....

[SWAMPSNIPER]

These do fine.

[marktwain]

Aren’t you supposed to cut the sprues off of those?

[marktwain]

http://gunwatch.blogspot.com/2013/05/taofledermaus-has-done-some.html

Here is the correct link to find the video!

[null and void]

3-D Printer Ping!

Political power grows out of the nozzle of a 3-D Printer!

[pennyfarmer]

Looks like the printed material would be good to deliver a oddly shaped projectile or gas canister. I could see using the printer to make an aerodynamic delivery of something besides just lead balls like the newer steel duck loads that use conical or square shaped pellets.

[SWAMPSNIPER]

Just set them pointing forward. I took a lot more care when I was shooting in matches but the ones in the picture will do just fine for hunting. The big thing is making sure they have no internal voids.

[marktwain]

Do you weigh them to determine that?

[Lurkina.n.Learnin]

A friend of mine had a mortar. He used beer cans filled with cement.

[null and void]

Is there a link that doesn’t require one to join google?

[null and void]

*nevermind*

[SWAMPSNIPER]

Only way to tell.

[elkfersupper]

A friend of mine had a mortar. He used beer cans filled with cement.

We used oxygen bottles with one end removed with a cutting torch and polished with a grinder.

Projectile was a bowling ball. Propellant was propane. Igniter was a standard Piezo out of a BBQ grill.

Made a big boom. Threw a bowling ball out of sight.

Ammo was policed up from a defunct bowling alley.

That was a lot of fun.

[Kevmo]

Printing propellant and priming is a bit further off,
***If you have those chemicals, can you simply add them during the process? Those chemicals have been around for centuries.

[marktwain]

I think it could be done. We know that black powder is a mixture of finely ground charcoal,potassium nitrate, and sulfur in a 6/1/1 ratio. I see no reason why a 3D printer that had 3 supply heads could not print black powder from moist mixtures of the three powders finely ground and moistened to toothpase consistency. Print the powder grains on plastic with a slight separation, let dry, and harvest by careful scraping with a wood scraper.

Production could be sped up by having a automated base feed for that went under a drying lamp and through a slot to scrape the powder into a container.

Just do small quantities at a time, maybe a couple of ounces.

[marktwain]

toothpase should be toothpaste