Make a colorful roadblock by tricolor 3d printer

Here is a video on YouTube http://www.youtube.com/watch?v=Sg1CU6kxzb4
And my Skype: reprappro.cn
Email :[email protected]
online store:http://www.dhgate.com/wholesale/store/ff80808136bfebe50136d41f502e7afe_0.html