Editing Sword (section)

===Mechanically-powered weapon=== 

This basically means that the sword is powered by an external power source, like motors. The [[chainsword]] for example, is common in sci-fi worlds that have close combat, as it's basically a chainsaw in sword form and the motor helps the sword do more then if it was just a sharp chunk of steel. Realistically speaking, power weapons would be bottom heavy, making them awkward to use, and if it goes the chainsaw route, then it would be hilariously impractical to use at all in combat situations; things softer than wood or ice tend to get caught in and gum up the teeth of a chainsaw, flesh being one such material. So, your custom chainsword would be rendered useless almost immediately, and in fact would be rendered less useful than an ordinary sword against whatever you were trying to [[RIP AND TEAR]] at the time. And spinning blades such as saws carry so much angular momentum that they resist movement in the same fashion as a gyroscope.

One could argue that the chainswords in 40K are made differently from actual chainsaws in that they're designed for cutting people in mind; the teeth are mono-molecular and are shaped like knives rather than the thick, axe-like notched blades of real chainsaws (which are designed to chew away at thicker and harder materials, like wood); allowing them to nick through flesh more cleanly than your everyday chainsaw. The motor would have to be more powerful than a car's engine, yet light enough to be carried in one hand, allowing it to run the blade at speeds that it the teeth won't get caught, while still making it as maneuverable as a standard sword. But that's technology in the grim future, as trying to make a chainsword with today's technology and engineering would make for a very impractical weapon. [[https://www.youtube.com/watch?v=5gj8pAN7Y7E]]

Impracticality aside, there's an argument to be made that in the 40k universe that chainswords and their non-imperial equivalents have a well-established purpose in the setting, analogous to the Buster swords 40k generally eschews. Beyond rogue humans or possibly Eldar (for which any sharpened stick should be a more sensible weapon), most opponents of the imperium pack incredibly tough flesh, extremely heavy armor, sheer mass enough to ignore grievous wounds, or any combination of the three. A chainsword, for all its downsides, can inexpensively provide some measure of response to any of these. The additional power yielded by the engine would exacerbate physical trauma, blowing physical injuries way out of human proportion. The sharp teeth provide concentration of force beyond any sword and can scrape through or catch in the gaps and seams inherent in any armor designed to move. The added motion and dimensions of force applied would help the wielder cut through limbs or body parts far too thick to slice apart for the same reason a chainsaw can gouge through thick tree trunks. All in all a chainsword gives the imperium a cheap one-size-fits-all answer to killing up close, with the acknowledgement that the weapon must be wielded not like a sword but like a saw. For all its technological improvement, the downsides are largely the same as they would be today: the wielder gives up grace, balance, most ability to parry, and accepts that they will be wounded by almost anything they fight. To take it one step further, it's an apt metaphor for the imperium itself: capable of grinding down anything through sheer low-tech single-mindedness, but always at grim cost in blood and lives.