Geohashing cookie cutter

This is a geohashing cookie cutter, see the official page for details: http://bit.ly/ghcookie

I have designed the first version (ghcookie.*) with the Custom-Cookie-Cutter-Generator by guru (thing:3433, how can I link to it?).

Then I've improved the shape a bit, still using the same tool (v2, ghcookie2.*).

Because I was still not completely satisfied with the result, I used some shell script to convert the CookieCutter custom format to an SVG path and used Inkscape + OpenSCAD to rework i