Electrical – Eagle – Custom pad shape for SMT inductor

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I'm trying to make the following footprint in Eagle for an SMT inductor:

enter image description here

I understood how to make D-shape pads and similar, but this is driving me nuts: my idea was to enclose a pad into a polygon with 6 vertices, so I could bend the lower central segment into the arc with the radius shown above in the figure.

I've tried to do this in many ways but I can't figure out how. I've also thought about importing some dxf or svg, in order to draw it with a more drawing-friendly software like Inkscape. Any ideas on how to obtain this shape?

Best Answer

Ok, found a way to do it. I post it here as a possible solution for anybody else who will incur in a similar problem.

I've used the polygon tool in a different way. I took the points shown in the image below as the vertices:

enter image description here

Then, I created the polygon with all straight lines. By editing the "curve" parameter of the segments AB and AC and by modifying slightly the position of the points A, B and C, I finally got the shape I wanted, using a circle in the tDocu layer as a reference. Here is the result and I'm pretty happy with it: not 100% precise, but it will do (for reference, tPlace tracks are 4 mils wide).

enter image description here

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