Anton Tenitsky shows how to use the sketch tool for hard surface design in 3D Coat.
Sculpting applications are a great way to work for hard surface design. Both Zbrush and 3D coat offer tools specifically for hard surface work. In 3D Coat, working with Voxels you can get a lot done using Vox-Hide. Another great way to design hard-surface models is to use the sketch tool.
Check out this tutorial from Anton Tenitsky that shows how you can use the sketch tool in 3D Coat to design a lot of the familiar elements that goe along with hard surface design.
Anton is a mentor at the CG Spectrum College of Digital Art & Animation.