Step 3: "Tie Fighter" Style Blades

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This is my favorite style of blades. They are stiff but light.
I got this first set by prying them off a junk louver from some heavy equipment.
They were a nearly perfect shape already.
In this version I'm using three nuts stacked up as axle spacers.
Later I added the tie rods and made better tubular spacers on the lathe.