I did a pencil for my first drawing because I wanted to do something simple. I spent a bunch of hours drawing my first version before realizing that I had written down all of my caliper measurements wrong. I was using an analog caliper and I was reading 0 as 1, etc., so everything was 0.1″ off (fortunately I have a digital caliper coming in the mail). I adjusted and frantically drew the second version of the pencil before class. I still need to add some dimensions so I’ll do an updated version soon.