# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1393081617 -3600
# Node ID 785e92ee4c9629cf277f843559fe46b7fcbe929f
# Parent  09bd2240669f00717c6cf85b40e4fc1eec8e29d9
Introduced the slight "inset" of the PCB support.
Reduced the inner case thickness at the sides.
Moved case thickness definitions to a more convenient place.

diff -r 09bd2240669f -r 785e92ee4c96 cartridge.scad
--- a/cartridge.scad	Sat Feb 22 15:36:15 2014 +0100
+++ b/cartridge.scad	Sat Feb 22 16:06:57 2014 +0100
@@ -75,6 +75,17 @@
 	front_depth = 6.5;
 	back_depth = 11.0;
 
+	/* Side thicknesses. */
+
+	front = 2;
+	back = 3.5;
+	top = 3;
+	front_left = 1;
+	front_right = front_left;
+	back_left = 1.5;
+	back_right = back_left;
+	bottom = 2;
+
 	/* Label details. */
 
 	front_label_width = 83.0;
@@ -112,7 +123,7 @@
 	back_cavity_depth = 1.5;
 
 	inner_back_cavity_offset = 1.0;
-	inner_back_cavity_offset_from_left = 2.0;
+	inner_back_cavity_offset_from_left = back_left;
 	inner_back_slope_offset_from_left = 10.0;
 	inner_back_slope_width = 2.5;
 	inner_back_slope_depth = 2.5;
@@ -141,17 +152,6 @@
 	(Acorn Support Application Group Note 014).
 	*/
 
-	/* Side thicknesses. */
-
-	front = 2;
-	back = 3.5;
-	top = 3;
-	front_left = 1;
-	front_right = 1;
-	back_left = 2;
-	back_right = 2;
-	bottom = 2;
-
 	/* Extra internal features. */
 
 	pcb_back_support_width = 1.2;
@@ -175,6 +175,9 @@
 	pcb_back_support_left_bump_offset_from_bottom = 15.1;
 	pcb_back_support_right_bump_offset_from_bottom = 17.6;
 
+	/* Move the PCB support towards the centre. */
+	pcb_support_margin = 0.55;
+
 	translate([-width * 0.6, 0, 0])
 	difference() {
 
@@ -227,7 +230,8 @@
 					pcb_front_support_depth,
 					pcb_front_support_height,
 					1, -1, 1,
-					-edge_connector_cutout_back_width / 2,
+					-edge_connector_cutout_back_width / 2 +
+						pcb_support_margin,
 					0,
 					-height / 2 + bottom + bottom_from_base);
 
@@ -235,7 +239,8 @@
 					pcb_front_support_depth,
 					pcb_front_support_height,
 					-1, -1, 1,
-					edge_connector_cutout_back_width / 2,
+					edge_connector_cutout_back_width / 2 -
+						pcb_support_margin,
 					0,
 					-height / 2 + bottom + bottom_from_base);
 		}
@@ -351,7 +356,8 @@
 
 			/* PCB supports. */
 
-			translate([-edge_connector_cutout_back_width / 2,
+			translate([-edge_connector_cutout_back_width / 2 +
+				pcb_support_margin,
 				edge_connector_cutout_back_depth,
 				-height / 2 + bottom + bottom_from_base])
 				justify(pcb_back_support_width,
@@ -372,7 +378,8 @@
 								pcb_back_support_left_bump_offset_from_bottom);
 					}
 
-			translate([edge_connector_cutout_back_width / 2,
+			translate([edge_connector_cutout_back_width / 2 -
+				pcb_support_margin,
 				edge_connector_cutout_back_depth,
 				-height / 2 + bottom + bottom_from_base])
 				justify(pcb_back_support_width,