X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=wall-cable-hook.scad;h=30762655ed21c069523d0daffd8637d54f3ca98a;hp=06291ac56addb294caf5809bab4e284cf65eb5c7;hb=c5b9f398993c756ff4446a2ef09c66aa8d58d662;hpb=a0fd39b3eff8e80e2823b62cc9609946db09f43d

diff --git a/wall-cable-hook.scad b/wall-cable-hook.scad
index 06291ac..3076265 100644
--- a/wall-cable-hook.scad
+++ b/wall-cable-hook.scad
@@ -1,10 +1,13 @@
 // -*- C -*-
 
-circle_inner_rad = 10;
+circle_inner_rad = 10 + 0.5;
 
 thick = 3;
 
-tab_sz = 15;
+tab_sz = 20;
+width = 20;
+
+screw_hole_dia = 4.5 + 0.5;
 
 // calculated
 
@@ -12,12 +15,26 @@ circle_outer_rad = circle_inner_rad + thick;
 
 module Plan() {
   difference(){
-    circle(r=circle_outer_rad);
-    circle(r=circle_inner_rad);
+    circle(r=circle_outer_rad, $fn=150);
+    circle(r=circle_inner_rad, $fn=150);
     mirror([1,0]) square([50,50]);
   }
   translate([-circle_outer_rad, -0.1])
-    square([thick, tab_sz + circle_outer_rad]);
+    multmatrix([[1,0,0,0],
+		[-1,1,0,0],
+		[0,0,1,0],
+		[0,0,0,1]])
+    square([thick, tab_sz + circle_outer_rad + thick]);
+}
+
+module Hook(){
+  difference(){
+    linear_extrude(height=width) Plan();
+    if (false)
+      translate([-50, circle_outer_rad + tab_sz - width/2, width/2])
+      rotate([0,90,0])
+      cylinder(r= screw_hole_dia / 2, h=100, $fn=50);
+  }
 }
 
-Plan();
+Hook();