Don’t get me wrong…you will still need to have dark edges in back to show depth and have proper lineweight. However, what I am referring to is that you should know what you’re trying to convey when you sketch.
Are you in the conceptual phase of design where loose sketches can benefit from inspiring new ideas…or are you sketching linework for a rendering underlay where you need to point out specifics in the products form or mechanical/material aspects. I wouldn’t do both. One is saying to the reader “I’m thinking something like this, but am open to changes.” the other is saying “This is how it is.” Which will drive clarity in meetings with clients/marketing/colleagues.
Here is an example of a loose ideation sketch that I am assuming was in the conceptual phase of design.
Hope it helps!
-Pb
