After several pages of sketching ideas for various drills and screwdrivers, some of my favorite ideas were consolidated here on this page.

After some blue-foam models to narrow down the overall form, some technical specifications were elucidated to use during CAD modelling (Solidworks).

Here are some results of the Solidworks 3d modelling.  The renders are generated with Hypershot.

This page focusses on some human factors, including usage interaction and compactness of form.