From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Thu, 29 Oct 2015 19:47:03 +0000 (+0000)
Subject: led-panel-ceiling-bracket: wip
X-Git-Tag: filamentspool-v2-release~145
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=312276b1830274d007feaf488fe21f8cfdf03f09;p=reprap-play.git

led-panel-ceiling-bracket: wip
---

diff --git a/led-panel-ceiling-bracket.scad b/led-panel-ceiling-bracket.scad
index a2e05ff..6e4b9b5 100644
--- a/led-panel-ceiling-bracket.scad
+++ b/led-panel-ceiling-bracket.scad
@@ -8,18 +8,27 @@ backspc = 10;
 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;
 
+octagon_fudge = 1/cos(22.5);
+
 module Bracket(){
   difference(){
     translate([-len/2, 0,0])
       cube([len, width, height]);
     for (xsgn=[-1,+1]) {
       translate([xsgn * holespc/2, -1, light_height - hole_from_back]) {
-	rotate([-90,0,0])
-	  rotate([0,0,360/8/2])
-	  cylinder(r=hole_dia/2, h=50, $fn=8);
+	rotate([-90,0,0]) {
+	  rotate([0,0,360/8/2]) {
+	    cylinder(r=bolthead_dia/2 * octagon_fudge,
+		     h= bolthead_depth +1, $fn=8);
+	    cylinder(r=hole_dia/2 * octagon_fudge,
+		     h=50, $fn=8);
+	  }
+	}
       }
     }
   }