This a quick print test I have been using to compare different cooling duct designs. It allows you to judge part cooling and overhang ability at all angles. Each petal steps through 60, 70 & 80 degree overhangs. The smiley allows you to see how really fine features do and helps you keep track of which side faced where when you are inspecting it.

Should take less than 15 minutes to print depending on your settings.

The pictures are from a .1mm layer abs print.