AT CAD Team/AT electric screwdriver
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I thought it might also be useful to make a AT electric screwdriver design. The main improvement would be the battery and the notion that most electric screwdrivers are not generic (brand-based screwdriver bits, ...). I was thinking that besides making the bits "generic" (brand-independant), we could also make the entire device modular (meaning that we could use it as a screwdriver, drill, jigsaw, ... As such, we would use the same electric engine for a multitude of jobs, and hereby save money. The power could be adjusted per task (ie screwing, drilling, sawing, ...) using a simple potentiometer. In addition, we could also get rid of the brand-specific battery/power supply. This latter could be done using net power for use at the workshop, and by using a "car battery" for use on the road (on-site). A car battery is a technology we can make ourself (using sulpheric acid); the battery will probably be a bit larger than conventional electric screwdrivers (these are lithium-ion I guess), but we can still probably make it fit into a backpack. I would however hold off momentarily of making this battery until we finished detailing on how the regular DIY home electricity system needs to be made. This latter system would also use a electrochemical battery (in certain setups), the construction thereof is more or less identical to the electric screwdriver system (deep-cycle batteries only have thicker plates).
KVDP 13:18, 26 March 2010 (UTC)
