Some additional beams for Torsten's "Webcam holder for Ultimaker" thing

**Note**: This is thing is not maintained on here any more, further development/support it will happen on its [Youmagine page](https://www.youmagine.com/designs/some-additional-beams-for-torsten-s-webcam-holder-for-ultimaker-thing).

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You can find the original webcam holder [here](http://www.thingiverse.com/thing:31171).
I wanted to position the webcam in the upper corner of the printer to get a nice view of the print bed. For this I needed to additional beam types: one turning the sc