The busy folks at the University of Washington's Solheim Additive Manufacturing Laboratory in their Mechanical Engineering Department have opened up again.
Opened up? That's right, they were "intellectual property" closed for several weeks as their legal department imposed a rather crushing IP regime upon them. However, they've managed to overcome this by convincing their authorities to accept use of a Creative Commons license for their works.
This means their amazing developments, formulas and prototypes can now again be shared with the world. Great work!