A cookie cutter for Saint Patrick's Day.
Scale it down if required, this is about as big as could fit on my ABP.
Print with 100% fill.
Use green for St. Patrick's day.
Use it to make cookies or play-dough cut-outs.
The design is from the shamrock on Wikimedia Commons. http://en.wikipedia.org/wiki/File:Shamrock.svg
To create the cookie cutter I converted it to three DXF files. One as-is, two as a path insets, and one as a path outset. The OpenSCAD file shows how the outset forms the base and the insets make it hollow.
The first version had walls that were too think, so I decreased the amount of inset for shamrockinset2.dxf. If you'd like thicker walls, in shamrock.scad replace the shamrockinset2.dxf with shamrockinset1.dxf.
I did actually print it in green, the camera just made it look blueish.