# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1398288333 -7200
# Node ID 4ba9e38063978ea583bea3f260dce7fc0cef5ad1
# Parent  ed46fc0cfae4fdba835adb614ab97bc5152f5741
Made the depth of the back part more readily configurable.

diff -r ed46fc0cfae4 -r 4ba9e3806397 cartridge.scad
--- a/cartridge.scad	Wed Apr 23 20:57:55 2014 +0200
+++ b/cartridge.scad	Wed Apr 23 23:25:33 2014 +0200
@@ -73,7 +73,10 @@
 	height = 68.3;
 	depth = 16.5;
 	front_depth = 6.5;
-	back_depth = 11.0;
+
+	/* How much extra depth the back provides for mating with the front. */
+	groove_width_extra = 1.0;
+	back_depth = depth - front_depth + groove_width_extra;
 
 	/* Side thicknesses. */
 
@@ -103,13 +106,12 @@
 	/* The groove around the sides and top. */
 
 	groove_width_exposed = 1.5;
-	groove_width_extra = 1.0;  /* how much the groove cuts out of the back */
 	groove_width = groove_width_exposed + groove_width_extra;
 	groove_depth = 1.0; /* how deep the groove goes into each side */
 
 	/* Additional cutting to mate the back and front. */
 
-	top_groove_width = 1.0;
+	top_groove_width = groove_width_extra;
 	top_groove_depth = 2.0;
 
 	/*