From 252b19d5baba62e2238c5ef19a6725001923f94e Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 7 Oct 2017 23:49:34 +0100
Subject: [PATCH] poster-tube-lid: wip

---
 poster-tube-lid.scad | 50 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 poster-tube-lid.scad

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
new file mode 100644
index 0000000..c96c86b
--- /dev/null
+++ b/poster-tube-lid.scad
@@ -0,0 +1,50 @@
+// -*- C -*-
+
+main_dia = 71.2 + 0.50;
+top_thick = 4;
+
+main_cnr = 4.0;
+
+rivet_posn = 6.0;
+rivet_thick = 1.67;
+rivet_width = 4.15 + 1.0;
+rivet_tall = 5.51 + 0.49;
+
+over_rivet = 0.5;
+
+bayo_interf = 0.75;
+bayo_behind = 3.5;
+
+seal_thick = 0.1;
+seal_pocket = 2.0;
+
+side_taper = 1.0;
+
+// calculated
+
+side_height = rivet_posn + bayo_behind;
+side_thick = rivet_tall + over_rivet;
+
+top_z = top_thick + seal_thick;
+
+$fs=0.5;
+$fa=5;
+
+module MainProfile(){
+  main_cnr_pos = [ side_thick, top_z ] - [1,1]*main_cnr;
+  translate(main_cnr_pos){
+    intersection(){
+      difference(){
+	circle(r = main_cnr);
+	circle(r = main_cnr * 0.5);
+      }
+      square([10,10]);
+    }
+  }
+  %polygon([[ -1,                    seal_thick      ],
+	   [ -1,                    top_z            ],
+	   [ main_cnr_pos[0],       top_z            ],
+	   [ side_thick,            main_cnr_pos[1]  ]]);
+}
+
+MainProfile();
-- 
2.30.2