BSA C15F Woodruff keys

[Tigerfeet]

Just in case it saves someone a load of time and effort whilst swimming in a sea of useless pattern parts that don't fit.... 
I have finally arrived at a position of having two Woodruff keys for the drive side of the bike that actually fit the slots in the shafts and the item being held. Hopefully the images are self-explanatory. (The washers were the winners in the competitions held to establish the diameter of the slots.)