From 6d66ac0c80564158a50c0f1d63fc50708620103e Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Fri, 30 Nov 2012 21:41:29 +0000
Subject: [PATCH] anke-gps-bracket: NestleCube has a hollow

---
 anke-gps-bracket.scad | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/anke-gps-bracket.scad b/anke-gps-bracket.scad
index 6190296..37c4c71 100644
--- a/anke-gps-bracket.scad
+++ b/anke-gps-bracket.scad
@@ -38,7 +38,8 @@ nestleddf = 4.0;
 nestleddbl = 3.3;
 nestleddbr = 3.6;
 
-nestlewallmin = 5;
+nestlewallmin = 4;
+nestleceilmin = 4;
 
 // Amount of wire protrusion to allow for
 plugwiremoreh = 25;
@@ -150,6 +151,21 @@ module GpsPlugT(){ ////toplevel
   rotate([0,-90,0]) GpsPlug();
 }
 
+module NestleCubeCutout(ca,cb,d){
+  dist = cb - ca;
+  mirror([0,1,0]){
+    rotate([90,0,0]){
+      linear_extrude(height=d){
+	polygon([[ca, -nestleh-1],
+		 [ca, -dist/2],
+		 [(ca+cb)/2, 0],
+		 [cb, -dist/2],
+		 [cb, -nestleh-1]]);
+      }
+    }
+  }
+}
+
 module NestleCube(){
   midw = nestlew/2;
   midd = min(nestledl,nestledr);
@@ -160,7 +176,12 @@ module NestleCube(){
   basew0 = -nestledwr;
   basew1 = +nestledwl-nestlew;
 
-  difference(){
+  cutd0 = based0 + nestlewallmin;
+  cutd1 = based1 - nestlewallmin;
+  cutw0 = basew0 - nestlewallmin;
+  cutw1 = basew1 + nestlewallmin;
+
+  translate([-(basew0+basew1)/2, -(based0+based1)/2, 0]) difference(){
     polyhedron
       (points=[[          +0      ,            +0,        0], // 0
 	       [          +0      ,            +nestledr, 0], // 1
@@ -180,6 +201,10 @@ module NestleCube(){
 		  [4,3,2],[2,1,0],[0,4,2],
 		  [7,8,9],[5,6,7],[7,9,5]],
        convexity=3);
+    intersection(){
+      NestleCubeCutout(cutw1, cutw0, max(nestledl,nestledr));
+      rotate([0,0,90]) NestleCubeCutout(cutd0, cutd1, nestlew);
+    }
   }
 }
 
-- 
2.30.2