How to Draw a Volute or Acanthus Scroll

This is not something I have ever needed or used but I collected a few references - just in case.  

How to Draw a Volute or Acanthus Scroll

http://surfacefragments.blogspot.com/2011/02/how-to-draw-volute-or-acanthus-scroll.html

http://www.thisiscarpentry.com/2009/07/15/drawing-a-volute/

http://chestofbooks.com/crafts/metal/Metal-Pattern/The-Volute.html#.Uw3iJ3lEBpo

Scroll Maker - 2D with SketchUp Scroll Maker

http://www.youtube.com/watch?v=mES14SnIAP8

Scroll Maker - 3D with SketchUp Scroll Maker

http://www.youtube.com/watch?v=oxXdXy9Gdes

http://www.classicaladdiction.com/2013/08/the-classic-acanthus/