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So one thing I would say about the 0.065″ wall is to consider a different material for the Z assembly. I know there’s a lot that goes into it already, but I just finished my Z assembly and with the DW660 attached it weighs almost 9 lbs! Without the DW660 it was almost 6 lbs.. I’m guessing you could drop it by 1-2 lbs by ordering thinner steel, aluminum, or even carbon fiber tubes.. I don’t know how big of a deal it will really be, but even wit the 0.065″ wall it’s pretty easy to bend a 4′ long rail.