Snap Circuits Hand Crank handle replacement

My son broke the handle part of his Snap Circuits® [Hand Crank](http://www.snapcircuits.net/products/product_details/hand_crank=Nzcz) (6SCHC) generator part. Elenco sell replacement components at reasonable cost, but I hated to junk the whole assembly just for a bit of broken plastic.

This is not an exact replacement (and doesn't fold nicely into the box like the original) but restores functionality to the piece.

First rev I just eyeballed based off only the first shaft measurement, witho