SAw this thread and thought I would share some info I found. OnShape looks very good, has a free version and is developed by the people who originally built SolidWorks

Here's a blurb from the site bot....

Many thousands of hobbyists are using Onshape's free Public Plan to design all sorts of cool things.I recommend checking out these learning resources to get started:
  1. Onshape Learning Center
  2. Community Forums
  3. Onshape Video Library




Onshape Forums
Onshape Inc is a venture-funded startup founded by members of the original SolidWorks team plus top engineers from the CAD, data center, mobile and streaming media industries.

Onshape


Onshape Video Library
This webinar will discuss the newly released Sheet Metal functionality. Topics include creating Sheet Metal parts, the Sheet Metal table and flat view, and defining other settings.