Originally Posted by
EdSawyer
Not to be too negative and pendantic but that drain is not going to really be very effective as a manifold. It will draw 95% of it's air from the center round opening where it meets the pipe going to the vacuum/motor, not drawing air from the full length of the drain (vent). The higher/faster the speed of the draw (volume and velocity) the more this will be the effect (drawing from center only). Probably not a big deal though.
Looking good in general, nice efforts and progress!
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