The Drive Belt lays Horizontally at the top and the bottom of the Board and runs through the Gantry. The Gantry moves back and forth across the board using the toothed is a spanning framework which attaches to the top and bottom of the Boardand moves horizontally across it using the Drive Belt. It is important that the red lines Red Lines on the Drive Belt line up to the red lines Red Lines on the Toothed Pulley of the Gantry, otherwise the Gantry would be crooked.
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