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Originally Posted by acer_7
Umm . . I will try to explain it more guys & thx for all these replies.
Inspite of the extension being desired to be 6-7 meteres, I don't need it to be stiff at all. I just want it to reach a specific area.
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If you don't need it to be stiff, then you can unroll a thin sheet of spring steel, much like a tape measure. This can be motorized, as the steel tape can be shot out (at about 25cm/sec) and recoiled with the same motor.
Is the arm simply touching something 6-7 meters away? If so, then the above suggestion works well.
Good luck,
Andy B.