The Projector icon set was designed to cover a range of basic application functionality, as well as a complex set of creative tooling. I wanted the icons to feel light and legible, relying primarily on the use of uniform stroke. Each icon feels like it was drawn by the same pencil, while the unfilled combinations of positive and negative space help differentiate one from the next.
Version 1 was based on the use of single pixel strokes, matching the structural elements of the rest of the app. As the app became more complex, additional contrast and hierarchy were needed. This led to the adoption of a slightly heavier 2px stroke, and the v2 icons were updated accordingly.