I also drew a circle dimensioned to the size of the outer diameter of the bearing and centered it at (0, 0) to make the space for the bearing. I then moved these circles and positioned them so that one circle was centered in rectangle width wise and the edge was tangent to the edge of the rectangle for each wing. To make the spaces for the weights, I drew three circles and dimensioned them so that they matched the inner diameter of the spaces I measured on the actual body. This rough shape will act as an outline so that I can be sure that the body has the correct dimensions. I removed those lines and the intersecting ends of rectangles, leaving me with the rough shape of a three-wing spinner. Next, I drew 1' wide rectangles intersecting at the origin using the lines as the center. I also made these lines at a 120 degree angle from each other and dimensioned it that way so that it would be symmetrical. I drew these lines from the origin on the sketch plane so that the center of the spinner would be (0, 0).

I started by drawing three lines the length from the center of the spinner to the edge of the wing. The Body was the only tricky piece to model, and it really wasn't that bad.

I just eyeballed these circles since the software snapped to existing ones and the actual thickness of the rings isn't a critical dimension for the model. To create the aesthetic parts, I made a sketch plane on the ring and drew four circles, two of them matched the edges of the ring, one was a little smaller than the outer diameter, and the last one was a little larger than the inner diameter. I did this so that I could add the aesthetics created by the rings and the cover, but if you aren't modeling those parts, just extrude the sketch by the thickness of the bearing.j

Then I extruded the sketch 0.05' less than the thickness of the actual bearing. I started by drawing two circles on a sketch plane and dimensioned them so that one circle was the same as the outer diameter of the outer ring and the other was the same as the inner diameter of the inner ring. But I like to model the aesthetics, so I did that too, but I didn't bother to get exact dimensions of those parts. For the bearing, the only dimensions that really matter are the outer diameter of the outer ring and the inner diameter of the inner ring.

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