I am looking for 2D or 3D, freeware or low cost woodworking cad software?

You may also want to check what that's going to do for your system pressure. Seems that having to force the air through the water might put quite a load on the system resulting in a serious drop in both static pressure and air velocity. But then again, I'm only an EE sizing up a hydraulic engineering problem.
+--------------------------------------------------------------------------------+ Now we'll just use some glue to hold things in place until the brads dry +--------------------------------------------------------------------------------+
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