Story of my life.
Inspired by aubenc's "don't do it - hot end" ( thingiverse.com/thing:9319 ).
This sign (billboard) is intended to prevent people reading Aubenc's post about "don't do it - hot end".
What does Josti means? Look at these video's and you will understand:
( http://www.youtube.com/watch?v=smr0kH2XvIE ) and ( http://www.youtube.com/watch?v=_4RjhW0SnA0 )
I used this polygon generator program ( thingiverse.com/thing:9290 ) to create this object.
Download and open and run.