content: If you want a better look at the design, here is a guy who built his own EM Drive from the plans posted online. It really does look like just a copper bucket. Because largely, that's all it is. He even shows in detail how much thrust it produces (not much, but certainly detectable). It also changes direction of thrust when he turns the device. As a side note, it's also fantastically dangerous in terms of electricity used. He's not using "this will kill you" current. He's using "this will make fleshy matter actually explode if you touch an exposed wire".