Industrial Design punya cerita: Sketches

4 types of sketches:

i) Process sketches.
The main purpose is about understanding an assignment. There are more writing that sketching. A focus is examining problems and analyzing the contest.

ii) Ideation sketches.
Sketches that are created by designers while developing an idea of a product. Mainly roughly made and without details.

iii) Explanatory sketches.
Created to explain function, shape and structure of a design concept. These are sketches presented to a client. Readable to everyone.

iv) Persuasive sketches. 
Finishing sketches that are usually created in digital softwares such as CAD programs, Adobe Photoshop and others. Detailed and colorful to influence audience and sell a design concept.