Customizable improved storage handle screwdriver

NOTE: This is a work in progress. I haven't test-printed it yet.

Screwdriver handle for storage of the magnetic chuck included with bit sets
[like this one](http://smile.amazon.com/DEWALT-DWAX200-Security-Screwdriving-31-Piece/dp/B00C1XZIJC)
[or this one](http://smile.amazon.com/SE-7519SD-33-Piece-Security-Extension/dp/B002E0S2SQ)
and six bits.

It also requires:
* One 3/16" cylindrical magnet.
* Six 1/8" dia. X 1/16" height cylindrical magnets.

You can find the magnets at K&J magnetics, ebay, or possibly Amazon (where I got mine, but the particular ones are discontinued).