My son broke the handle part of his Snap Circuits® Hand Crank (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, without realizing how small the whole would turn out...it worked but I recommend the full size rev2 ;-)

1. Print (I used ABS, support typically needed)
2. Drill out a hole straight through the shaft for the original metal linkage rod
3. Install the metal rod, give circuit component back to its owner