Hyperboloid Pen Holder

thingiverse | Free

Holds 16 pencils that have diameter up to 8 mm. You might want to scale the STL model ...

Book Ring

thingiverse | Free

This is a thumb ring designed to help hold a book open when reading one-handed. ...

Gyro Cube

thingiverse | Free

Inspired by video http://www.youtube.com/watch?v=a5Zx02qAacA I’ve modeled my ...