Can anyone tell me how exactly they put one of these wooden handled screwdrivers together, I see on the ferrule that there are two tiny cutouts on the bottom where the shank of scredriver is so maybe the shank is winged ever so slightly but still unclear on how it is attached to the handle and how it is driven into the handle to stay.

Yup. little wings forged into the side of the shank, yet the rest of the shank is still round.
The end is squared off blunt.
So you press it into a tight hole drilled into the handle and the little wings fight their way in until the shank bottoms out on the blunt end.
  The wood recovers some after the wings pass, and this plus the wings themselves keep the shaft from spinning.
   
I can't believe you never pulled one apart. :)
Get a total junker and clamp in a vise just below the ferrule. Take a prybar or very large screwdriver and slip it in under the ferrule. Pry it up. It'll move 1/4 to 1/2 inch. Take another bite on the shank near the ferule, and do it again. 
Pretty soon you will work it off, and you can see for yourself.

There might be times you want to swap one handle onto another shank. This is how.
   yours Scott
   

I see, I assumed alot wood might be split this way even though a hole was pre-drilled

Quote from: 1930 on July 03, 2011, 05:36:28 AM
I see, I assumed alot wood might be split this way even though a hole was pre-drilled

The wonder isn't that the wood does not split. The wonder is that they hold so well for generations.
The wings look pretty insignificant, when you see them.
  yours Scott

I would guess once they are forced in there the wood will close around those titties pretty tight

QuoteThe wood recovers some after the wings pass, and this plus the wings themselves keep the shaft from spinning.