3d Printed Rocket Engine Takes Flight (blog.reprap.org)

Is there a photo of said rocket engine? I scrolled through the blog but didn't find anything specific.

Filming the launch from an Arducopter was pretty cool though.

My school gave a student £200 to build his own RepRap as a project. It took him all year but he left for university before I could see it in action. I did have a chat to him whilst he was laser-printing some parts and it looked absolutely incredible - both in terms of the concept itself, and complexity.

+1 for reprap link.

Looks not to be true, although I can't verify this. A commenter posted the following hours later:

I was there and filmed it.

He did not fly the printed engine. The rocket you saw fly was a solid for testing GPS systems. The printed engine was run for 2 minutes on a stand.