Build your own Gauss Rifle

This isn’t the first time we’ve posted about how to build your own Gauss Rifle but I just love the lethal weapons you can make with just a ruler, a handful of ball-bearings and a few magnets. (I’m not joking about the lethal bit either). Check out the rest of Sci-toys for loads of Gonzo gadgets that you can build with your children (not my words since other projects include Railguns!)