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well as far as making the zig-zag i would have access to a laser cutter with a cutting area of 18"x12". i think all i would need is an .eps file to make it work. but about air tabs at work the tech at work installed them on a cube van, and the truck sways a lot less in a cross wind and when a semi goes by the van is not sucked into the semi's wake, but the estimated mgp gain was >1
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