Good lines are clear. The viewer knows exactly how your product looks in the real world. When they look at a line they can tell immediately whether it is the edge of a form, or something on its surface. They never have to guess what a line is showing.
Bad lines are vague. The viewer has trouble imagining your product in the real world. They can’t tell product edges from surface details. They may have to guess where the important lines are and what they are showing. Read More