Doodles of engineering sketch of an  existing screwdriver.

Refined engineering sketch of an existing screwdriver.

First Issue - Engineering sketch of a modified screwdriver.

Second Issue - Engineering sketch of a modified screwdriver.

Made with co-injection molding. The body is made of polyvinyl chloride with a smooth surface and where the user holds the body of the screw it contains dimple texture to avoid slipping when in use.

Close view of the CAD screwdriver project during modelling process.

Engineering drawing of a Screwdriver in an exploded view. 

Final render of the Screwdriver.