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Impressive. Could you consider supports for pencils/pen cartridges/xacto blades on a ver. 2.0?
Table That Can Be Turned Into a Chair and a Storage Unit
#6 tie wrap drain unblock - it's easier and a lot much safer to notch it by cutting a little with a pair of scissors, which makes the notch remain open. And repeat for the other side, in between the first side notches.
Techgenie, for upgrade you can use gears, shafts and other hardware from a used toner cartridge. And perhaps a motor from an old printer.