Customizable version of Twitchy's design written in Openscad.
You can customize the number of bits and height of the driver as well as the size of the magnet you can place at the bottom.
Go crazy!!!!!!!!!!!
Adjust the tolerances to suit your calibration. The main value is the flat to flat measurement of the bits. The default should give you a good starting point.
The author marked this model as their own original creation. Imported from Thingiverse.