My second version of my mini ratcheting screwdriver build around a standart (Bosch) Bit extender, which is therefore pretty sturdy and allows ergonomic small space handling! 

Now it has a fully print in place 2 way ratchet !!Works with PLA but use preferably PETG and ABS.

If there is enough interest I might make a bigger version too! :)

Features

• (NEW in Mk2) Rachets while screwing in and out (set direction via the selector)

• As small as possible while accomodating the bit extender as a sturdy core piece

• A ergonomic compact handle design to reach into small spaces

• Fits almost any commen drill bit

• Adjustable: Depending how deep you pressfit the Bit extender you can adjust the drivers length and shape (~20mm length increase possible if needed)

• Adaptive: Also through the rachet it can freely rotate in one direction but not in the other direction. (But you can stop that by gripping the wheel)

You need: A most standart  bit extenders from most drills work!

Printing Orientation

• print with no supports and the rachet facing down

• Use a brim if needed but only on the outside!

Assembly:

1. Put the ratchet in the lower position and break out the supporting ring! (marked blue)

     2. Press the Bitextender in from the front. This extender is securely held in by friction!

I Hope you like it!

Happy printing!