ademir, Can you read Minds? I'm actually posting pictures of hdd jog wheel mount... I grinded (ground isn't a word in this sense, right?) the base of the enclosure to be flat and I'm going to mount the encoder wheel on the base of the HDD spindle, use that cool little spacer to give me some space ;) and mount the jog wheel (CD) on top. now rasteri, If i were to connect the touch sensor wire to the spindle with a conductive jog wheel on top would it work? The spindle is aluminum I believe, But don't quote me on that...