sleepphone-cable-box: reinforce keeper

[reprap-play.git] / brompton-computer-guard.scad

diff --git a/brompton-computer-guard.scad b/brompton-computer-guard.scad
index 88f1994f0a249a631ab7ae90d598cbcbe5fb5f99..35b0a182b6e9849e80609278345c2121e857b2ee 100644 (file)
--- a/brompton-computer-guard.scad
+++ b/brompton-computer-guard.scad
@@ -11,7 +11,7 @@ arch_breadth = 25;
 hole_dia = 4 + 0.5;
 
 pbase_tab = 12;
-pbase_thick = 2;
+pbase_thick = 4;
 
 // computed
 
@@ -21,6 +21,11 @@ echo(arch_alpha,arch_beta);
 arch_in_rad = arch_width/2 / sin(arch_beta);
 arch_to_chord = arch_in_rad * cos(arch_beta);
 
+inner_pbase_thick = 8;
+echo(inner_pbase_thick);
+
+inner_pbase_rad = arch_in_rad * 2;
+
 end_thick = arch_thick;
 
 holes = [[[  5  , 5  ], [16  , 21]], // left
@@ -77,13 +82,19 @@ module Arch(){
        }
       }
       difference(){
+       translate([0,0, arch_breadth - pbase_thick])
        linear_extrude(height=pbase_thick){
          difference(){
            hull(){
              ArchProfile(true);
              ArchProfile(false);
            }
-           MainCutout();
+           intersection(){
+             MainCutout();
+             translate([0, -inner_pbase_thick
+                        - (inner_pbase_rad - arch_in_rad)])
+               ArchCircle(inner_pbase_rad);
+           }
          }
        }
       }
@@ -92,4 +103,4 @@ module Arch(){
   }
 }
 
-rotate([0,0,45]) Arch();
+rotate([0,0,45]) translate([0,0,arch_breadth]) rotate([0,180,0]) Arch();