CAD for Personal Manufacturing
Hod Lipson and Melba Kurman:
"Realistically, though CAD software continues to drop in price and complexity, it’s still nowhere near as user-friendly as today’s mainstream office applications.
Another barrier is that even the low-end CAD software described above was not created with personal fabrication applications in mind. Instead, today’s CAD software reflects its industrial legacy and is intended primarily for modeling and visualization applications rather than designing consumer goods and machine parts.
Ideally, to accelerate the adoption of CAD software aimed at the personal manufacturing market, design software would need to be easier to use and optimized for the unique constraints and capabilities of the physical manufacturing process." (http://web.mae.cornell.edu/lipson/FactoryAtHome.pdf)