A 3d rollercoaster made in Blender 2.5.
Rotation problem solved!
comment if you'd like to have a tutorial.
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https://www.youtube.com/watch?v=77P40lbuet4
This is a little animation rendered in Cylces. It uses 200 samples per frame and is rendered at 720p.
The prozess would have taken 5 days on my laptop with dual core prozessor, but thanks to renderfarm.fi it could be done just within 18 hours.
I can only recommend this site its an awesome service!
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https://www.youtube.com/watch?v=2JB6yp6JLS0