Part one of this design was to do a series of iteration sketches showing different concepts of the same part.  I picked the need to enclose the pulley wheel on MYOwnTail

Part 2 was a detailed sketch with shading, and I decided to do some sketching to lay out the shorts I plan on making which will work as part of MYOwnTail as the sensor system replacing Ag/Cl gel electrodes.

The final sketch was to make an instruction set for the silicone molding problem set (I had to run at the end and messed up the house, this sketch needed a storyboard)