In mathematics a minimal surface is a surface that locally minimizes its area.Here you have an example.
This shape is not my own development. It is based on a tutorial by ASopticom in Greek language [http://www.youtube.com/watch?v=x_nGoWTP0mE]. Though I do not understand Greek I succeeded in following the main way. For the round brim I found another solution.
For those who are interested in creating this interesting shape themselves I have made a tutorial in PDF. It is downloadable here in English and in German.
PDF missing:
"p>For those who are interested in creating this interesting shape themselves I have made a tutorial in PDF. It is downloadable here"
unkerjay, sorry, I became aware of your message only now, therefore I didnĀ“t answer before. Please try once more, for me it worked perfectly today.
nice object to check material multi bounce color bleed