Ring Band creation script (Q54210)

This OpenSCAD script will generate a plain wedding band style ring. Most parameters are user selectable such as the ring profile shapes. This would be ideal as the basis for a wedding ring... Potentially very useful when combined with the following: Ring metal cost calculator thingiverse.com/thing:12589 Ring Size System Coversion thingiverse.com/thing:12689 for creating and costing a custom wedding band or other such tomfoolery. Author: Mark Gaffney Version: 1.4 Date: 2013-03-19 Todo: Implement texturing Implement hallmarking Warning: Let the right one in Changes from previous versions: 1.4 - added ellipse_intersection.scad code for 2 new cross section shapes (cs_ellipse_intersection & cs_rounded_ellipse_intersection) - added support for write.scad on inside or outside of ring, engraved or raised 1.3 - Xxxxx's wedding ring version (no stone, no mount) 1.2 - Made higher resolution shapes by increasing rotate extrude $fn from 50 to 100 and shape $fn from 20 to 40 - Implemented half chamfered rectangle 1.1 - Fixed issue whereby rounded rectangle shape CS appeared slightly translated in Y direction - Fixed issue whereby half ellipse was never shown and normal ellipse was shown twice instead 1.0 - First version based on Ring_band_creation_script_v0.10.scad - Added more cross sections (cs_half_pill, cs_reverse_hemi_ellipse, cs_reverse_rounded_hemi_ellipse) Ring profiles available: pill, ellipse, hemi_ellipse, rounded_hemi_ellipse, rectangle, scallopped_rectangle, rounded_scallopped_rectangle, rounded_rectangle, chamfered_rectangle, half_pill, reverse_hemi_ellipse, reverse_rounded_hemi_ellipse