Building A Coil Gun

To ultimately shoot someone in an environmentally friendly way:

hahah the video is pretty good… electrocution, fires, a dancing unibrow etc…

You can check out his blog post on how to build it… but a word of caution, you might want to do your own calculations. ;)

Building-A-Coil-GunI believe coil guns have great potential for civilian use in the future once we can reduce the size of some of the components, and increase the current.  Someone actually did build a portable rifle version that seemed to be fairly powerful, which I blogged about a while back. We definitely aren’t quite there yet though…




John January 28, 2013 at 06:03 am

We’re far away from away from any sort of railguns in a man portable version.


Chris January 28, 2013 at 09:10 am

Haha! Nice. Humor AND science!


mitch January 28, 2013 at 12:12 pm

And he wonders why guns are illegal there. he nearly killed himself with his toy gun


Rob G January 28, 2013 at 02:45 pm

This guy is awesome! I can’t wait to see more how-to videos from him. Assuming he doesn’t accidentally kill himself in the process… ;-)


Anthracis January 28, 2013 at 07:31 pm

Idea = great
Execution = FAIL!


Anthracis January 28, 2013 at 07:32 pm

Idea = great
Execution = FAIL!

Eyebrows…= PRICELESS!


frank rizzo January 28, 2013 at 11:26 pm

They are closer then you think.

simple google search turned up this site:

Rail Gun Naval Test Shot


matt January 29, 2013 at 12:03 am

That rifle coil gun you linked couldn’t be considered “powerful”. They claim 1.25kJ of stored energy with a estimated 1% efficiency, meaning the projectile has 12.5J of energy. By comparison a .177 spring powered air gun has 20J of energy and a .22LR pistol has 159J of energy.


M January 29, 2013 at 01:55 am

have to agree with matt here, it’s hard to beat the energy stored in gunpowder.

Until we can come up with some kind of regenerative power supply that doesn’t make you glow in the dark we’re stuck on gunpowder.

Ships are a slightly different story because it’s easy to float a nuclear reactor and capacitors which can generate the energy needed for shots. but even then there are some delays from recharging the capacitor banks which makes them inferior to classic gunpowder.

Navy seems to be more interested in rail guns, which are very similar. here’s a guy who homemade a 20kJ version:

Even that had to be carried around on a flatbed cart. sorry, man portable rail and coil guns are firmly in the sci fi/ game fantasy world.


matt January 29, 2013 at 01:06 pm

lol yeah, and that was just the coil assembly on the cart, think of how big and heavy the capacitor bank is.


Hunter57dor February 1, 2013 at 09:26 pm

please don’t give this man anything more dangerous than a blunt crayon.

we already have a hard enough time convincing non gunners that what we do is safe, without people like him being clowns on the internet.



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