BBG Series #3 - Line Art

First time committed so much in a line art piece, usually I just scribble on my sketchbook and proceed my designs all the way through final with photos and rendering. Doing a full line art process was quite fun and frustrating for me as well.
Did this for a print to be hang in the office along with my teammates in the concept art department and I decided to record the whole process as well. Hopefully this will give an insight on how I usually work. With a lot of references around to refer to and not drawing base on 100% imagination.

Wasn't thinking too much about concepts or ideas over here, just wanted to have fun and draw something based on what I was looking at recently which was tech wear and mechanical design.
If I can't buy them, I might as well draw them. Maybe I'll try to upload one that contain meaningful design thought process in the future.