Anyways, I extruded those profiles (top, side, and front), then took the intersection. I drew another sketch and pocketed it to try to get the part that contacts with the gps unit somewhat closer to the original. Then applied a few fillets to round off a few edges.In order to add more to the shade I took a cube and used it to form an intersection and a cut, essentially splitting the piece into 2 pieces, a top and a bottom (or maybe front and back, depending on how you look at it). Then I added a third piece for the middle. The third piece was created by taking a cross section with the cross section tool in the part workbench, then upgrading it in the draft workbench to make it into a face, then finally extruding that face symmetrically to create the center piece. Think of it as a kind of extra leaf in a table.
Common002 is what I refer to as the top piece. Cut001 is the bottom piece. Extrude004 is the middle piece that you would resize if it's not what you want as shown in the animated gif below. All you have to do is delete the Fusion object, then modify the length forward property of the extrusion for the Extrude004 (center piece) object, then move the other 2 pieces so they fit up against it, then fuse them back together into one single piece again.
Create a mesh object out of the fusion object in the mesh design workbench (meshes menu -> create mesh from shape), then check it for errors using the mesh menu -> analyze -> check and repair tool. Export the mesh object to an stl file for printing. I say to do it this way because the fusion object does show some check geometry errors. But I made a mesh out of it and the mesh checked out okay, so I think it should be okay for printing. Hopefully.
- sunshade2-opt.gif (799.06 KiB) Viewed 1914 times
I'm running 16gb ram, AMD ryzen 7, 8 core processor, so I know its not my 1000$ 
pc. I have to sit with the "not responding" freecad window for literally an hour EVERY SINGLE time I convert mesh. Then i have to wait to convert to solid 