Originally shared by Mark VanDiepenbos
https://www.youtube.com/watch?v=_nYl9Yla8MM&feature=autoshare
I just made one of those, because it can be built with no scaffolding/support its great for calculating what angle to configure your scaffolding/support at for later jobs 
I did mine without support, and my KISSlicer settings are here https://plus.google.com/+DanielBull/posts/JTJ44tMxf9M but the settings will really depend on what printer and PLA you have Jaime