[quote=@Shadow Dragon]
Could I make something out of nanobots, or is that illogical?
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[/quote]

Not so much illogical as extremely inconvenient and expensive. Nanobots are very useful machines, especially for medical purposes. But the problems with them in a broader sense are many, without any specific order here are five ways of describing them:


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[b]Materials;[/b] What are the nanobots made of, are they a metal, an organic compound (maybe they are freemoving cells), or some kind of metamaterials? How easily accessible are the atomic or molecular components? What are the limits of these materials in terms of tactile strength, hardness, pressure, cold, heat, radiation, oxidation etc?

[b]Energy;[/b] How are the nanobots powered, do they have internal fuel-cells, glucose, microscopic solar-panels, are they fueled by ambient radiation be it alpha beta or gamma or through the usage of a thermocoupling, subspace microwaves or nearby electromagnetical fields? The issue is their extreme size constraint, holding a charge without magical technology of hyperspace linkage mean they either have to have a constant supply of energy or have a short active time limit before recharge.

[b]Capabilities;[/b] What is the use of the nanobots, because due to their size, it is hard for them to do more than a single or a few things. Maybe respond to a chemical imbalance by releasing medicine or expand to seal a wound. If the function of the nanobots are of the more destructive variety, how is this achieved? is it something dependant on their energy-levels to perform certain actions, are they dependant on outside environmental factors, or do they need to attain a certain group-density to reach the grey goo critical mass. This is of course the information about the nanobots most influenced by the other four points.

[b]Control;[/b] Do the nanobots follow a preset of commands or instructions regardless of what the user wants? Or are they all equipped with a small processor and narrow ai, maybe a connection network to all the other nanobots for a pseudo-hivemind? Or are they controlled directly on the group-density by a normal-sized user or system, radio? infrared? em? pheromones? psychic field?!? Do they lose all coherence when left alone or do they try to carry out their latest instructions?

[b]Production;[/b] Were they built in a lab by printers, or painstakingly handcrafted by a micro-engineer, were they grown inside a body by the same process as viruses? Or is this the kind of nanobots that assemble more of themselves out of nearby raw materials? Consider what is needed to built a certain kind of robot, and then shrink the printing or tools down to the micro-scale. 
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