a wand operating under the bernoulli principle to pick up , transport and deposit wafers , which continuous pattern imposed into the horizontal surface of the single piece paddle , a variety of openings oriented within the continuous pattern and passing through the horizontal surface of the single piece paddle , a channel with walls having a variety of openings spaced apart from one another and passing through the walls of channel , which may be fit into the continuous pattern and the openings in the walls of channel aligning to some of the variety of openings oriented within the continuous pattern .