When I work on a complex design, such as this simple chair, I find the best way to modify the design is to take photos of the project from all angles, even awkward ones. Then I print them out and start sketching on them.
This process saves me hours of prototyping. In this case, I’m working on the crest rail of the chair, mostly the angle that is cut on the ends and its overall length.
For me, this is easier than modeling complex pieces in CAD. I know it looks primitive, but it works surprisingly well.
— Christopher Schwarz