From 7fb3440bf7d2d6bd9dd875e1665d93331bff857e Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Thu, 29 Oct 2015 19:55:02 +0000
Subject: [PATCH] led-panel-ceiling-bracket: ready for test?

---
 led-panel-ceiling-bracket.scad | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/led-panel-ceiling-bracket.scad b/led-panel-ceiling-bracket.scad
index 6e4b9b5..ae3456c 100644
--- a/led-panel-ceiling-bracket.scad
+++ b/led-panel-ceiling-bracket.scad
@@ -4,23 +4,38 @@ holespc = 20;
 
 len = 50;
 width = 20;
-backspc = 10;
+backspc = 8;
+extra_height = 2;
 light_height = 12.5;
 hole_from_back = 7.2 + 0.5;
 hole_dia = 3.5 + 0.5;
 bolthead_dia = 7 + 1.0;
 bolthead_depth = 5;
 
-height = light_height + backspc;
+plasfix_dia = 4.5 + 0.5;
+plasfix_head = plasfix_dia * 2;
+plasfix_headdep = plasfix_dia;
+plasfix_sink = 3;
+
+height = light_height + backspc + extra_height;
 
 octagon_fudge = 1/cos(22.5);
 
 module Bracket(){
   difference(){
-    translate([-len/2, 0,0])
+    translate([-len/2, 0, 0])
       cube([len, width, height]);
+    translate([0, width/2, 0]) {
+      cylinder(r= plasfix_dia/2, h=50, $fn=20);
+      hull(){
+	cylinder(r= plasfix_dia/2, h= plasfix_headdep + plasfix_sink, $fn=20);
+	translate([0,0,-1])
+	  cylinder(r= plasfix_head/2, h= plasfix_sink + 1, $fn=20);
+      }
+    }
     for (xsgn=[-1,+1]) {
-      translate([xsgn * holespc/2, -1, light_height - hole_from_back]) {
+      translate([xsgn * holespc/2, -1,
+		 light_height - hole_from_back + extra_height]) {
 	rotate([-90,0,0]) {
 	  rotate([0,0,360/8/2]) {
 	    cylinder(r=bolthead_dia/2 * octagon_fudge,
-- 
2.30.2