From e35c35d79348f9195b2b52042800bf90329e3d05 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 9 Oct 2017 02:40:10 +0100
Subject: [PATCH] poster-tube-lid: introduce top_middle_dr (instead of
 hardcoding 11)

---
 poster-tube-lid.scad | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 9b95f00..79dc6ea 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -3,6 +3,7 @@
 main_dia = 71.2 + 0.50 - 2.26;
 top_minthick_middle = 4;
 top_minthick_by_oring = 2.5;
+top_middle_dr = 11;
 
 main_cnr = 4.0;
 
@@ -132,8 +133,8 @@ module MainProfile(){
 	  square([10,10]);
 	}
       }
-      polygon([[ -11,                   middle_bot_z      ],
-	       [ -11,                   top_z             ],
+      polygon([[ -top_middle_dr,        middle_bot_z      ],
+	       [ -top_middle_dr,        top_z             ],
 	       [ main_cnr_pos[0],       top_z             ],
 	       [ side_thick,            main_cnr_pos[1]   ],
 	       [ side_thick,            -side_height      ],
@@ -203,7 +204,7 @@ module Cover(){ ////toplevel
 	translate([main_dia/2, 0])
 	MainProfile();
       translate([0,0, middle_bot_z])
-	cylinder(h= top_minthick_middle, r = main_dia/2 - 10);
+	cylinder(h= top_minthick_middle, r = main_dia/2 - top_middle_dr + 1);
     }
     for (r=[0,180])
       rotate([0,0, r])
-- 
2.30.2