Stamp-o-matic with square base

Just added a rectangular base to the scad, for whatever you need it.
contour_radius variable controls marging from the stamp.

For instructions follow original thing:

Stamps from pictures of your choice.

Open your image with:
http://chaaawa.com/stamp-o-matic/

Copy the output, open in Customizer, and paste in input.

Better
pictures
by Modorok

Instructions
Thanks to: **Potrace** by [Peter Selinger](http://potrace.sourceforge.net/) Ported to AS3 by [Nitoyon](http://www.libspark.org/wiki/nitoyon/PotrAs). Javascript version by [George Nagaoka](http://d.hatena.ne.jp/project_the_tower2/20110724/1311473645) and [DEFGHI1977](http://www.h2.dion.ne.jp/~defghi/img2svg/potraceHtml.htm).