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You'll need :
-a few m3 screws (1cm and 2cm)
-a fexible shaft (I bought a dremel-compatible flexible shaft from OBI; the house-brand) When you take apart the flexible shaft grip-end you need to scavenge the two ball-bearings (one smaller and one larger).
-a still working printer to print the parts
-a keyhole file to 'fix' the gears (they are too snug, but a bit of filing down the teeth fixes things; I used the stl files provided by rushgears.)
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