Open Your Heart

thingiverse | Free

Update: a dual color version is now available: http://www.thingiverse.com/thing:218535 ...

Test Your 3D Printer V2

thingiverse | Free

after a lot of wishes we present the new smaller Test your 3D printer! version 2. ...

Build Your Own Jet Engine

thingiverse | Free

Build your own jet engine right at home. This model engine, rendered by designer ...

Test Your 3D Printer

thingiverse | Free

check out the new version 2http://www.thingiverse.com/thing:1019228 version 3http://www.thingiverse.com/thing:1363023more ...