Apparently they can be made with a $5000 laser metal sintering machine, lock stock and barrel (pun)
The only thing I think may need to be made is the springs, although maybe they can make them too, seems more solid form.
Apparently some guy is even using a standard 3d laser printer to print out cartridges, which was highlighted on info wars.
Now there is also fractal modeling which I have inclined can be used to increase chamber and cartridge strength.
gizmodo.com/5964609/custom-3d+printed-beams-can-be-10000-times-stronger-than-steelUsing thermally sheilded plastics or resins or composites, that are fractally modelled I think you could print out all your gun parts and do a little bit of sanding, and you'd be good to go. The only thing is how to make gun powder....
It doesn't seem real hard. But it seems like the $1000 machine only works with temps up to about 240 celcius while the lasers on the $5000 machine can mold steel and titanium objects. PS aluminum powder can be made from ground aluminum cans... steel can be got for all kinds of things with a grinder... I think though that this fractal modelling stuff if usable could be good otherwise the firing chamber and barrel will need to be build with prefab material or cut materials..
but making an assault rifle with this tech is just a matter of using the .cad files.
Example the ar-15 is found here.
defcad.org/ar-15-magazine-30-round-mag/I havn't tried this myself but the learning curve to operate these machines given the cad file seems simple. I'm guessing you could make metal weapons such as machine guns for under a $10,000 investment, while plastic fractal limited use assault rifles for under a $2000 investment, you could assemble them 24/7, all with a 3d laser printer. I would like to see how well sand or silica or "ash carbon" can be used to make carbon structures, I'm thining though the nanoscale technology isn't there yet, but it is at the micron level now...
I totally feel like experimenting with this but it will have to wait until October or November to save up some cash for a machine.. in reality I'd like to invest in the $5000 sintering machine, but I think that I will be able to build one for much less using some simple robotics, some circuit boards and high powered lasers.. definitely a cool DIY project..
I'm trying to wrap my head around nitrocellulose though apparently you need wood sulpuric acid and nitric acid (not sure where to get those naturally from just yet)
I figured it out, I need sulphur and piss and wood. (and a swiss army knife)
apparently alberta is the closest source of sulphur... "Owing to the high sulfur content of the Athabasca Oil Sands, stockpiles of elemental sulfur from this process now exist throughout Alberta, Canada"
I wonder if an old shorted car battery can be used instead of making the sulphuric acid, and then all I'd need is the piss and wood.
thanks.