Google Sketchup is a free and very powerful 3D program. Orthographic Illustrator files can be imported into Sketchup and complex illustrations can be done.
The Manager Products.com
The Manager Products.com
Stax Chip Dispenser
Patent Illustration
Rendering services in Photoshop, Illustrator, InDesign, Dreamweaver, Joomla, and Sketchup for designers and book publishers.