X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=a06567b607ed2fc9d398e321b161bf909fde65fd;hb=6bace553c2c827f378e26a8c8c03ba866df20515;hp=e0735787138b5fb961b2e706390963ecfea741bd;hpb=f4156124eea05d436981bbf44fb90445195c89b3;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index e073578..a06567b 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -2,10 +2,10 @@
 
 main_dia = 71.2 + 0.50 - 2.26;
 top_thick_middle = 4;
-top_thick_by_oring = 2.5;
+top_thick_by_oring = 3.0;
 top_middle_dr = 11;
 
-main_cnr = 4.0;
+main_cnr = 6.0;
 
 rivet_posn = 6.0;
 rivet_thick = 1.67;
@@ -58,15 +58,12 @@ oring_oblate = (1 - oring_compress);
 oring_y_rad = oring_thick/2 * oring_oblate;
 oring_x_rad = oring_thick/2 / oring_oblate;
 
-seal_thick = oring_y_rad * (1 + cos(oring_upper_embed_angle));
+by_oring_z = oring_y_rad * (1 + cos(oring_upper_embed_angle));
 
 side_height = rivet_posn + bayo_behind + rivet_thick/2;
 side_thick = rivet_tall + over_rivet_wall;
 
-top_thick = max(top_thick_middle,
-		top_thick_by_oring + oring_y_rad);
-
-top_z = top_thick + seal_thick;
+top_z = top_thick_by_oring + oring_y_rad + by_oring_z;
 
 middle_bot_z = top_z - top_thick_middle;
 
@@ -140,8 +137,8 @@ module MainProfile(){
 	       [ side_thick,            -side_height      ],
 	       [ side_taper,            -side_height      ],
 	       [ 0,                     -rivet_posn       ],
-	       [ 0,                     seal_thick        ],
-	       [ -oring_x_rad,          seal_thick        ],
+	       [ 0,                     by_oring_z        ],
+	       [ -oring_x_rad,          by_oring_z        ],
 	       ],
 	      convexity=10);
     }
@@ -212,7 +209,7 @@ module Cover(){ ////toplevel
 	BayonetCutout();
     for (r=[0 : 60 : 179]) {
       rotate([0,0, r]) {
-	height = top_thick - brace_above_below*2;
+	height = top_thick_middle - brace_above_below*2;
 	translate([0,0, middle_bot_z + brace_above_below + height/2 ])
 	cube(center=true, [ oring_bore - brace_end_shorter,
 			    brace_hole_width, height ]);
@@ -255,8 +252,13 @@ module CoverTest2(){ ////toplevel
 module CoverTest1(){ ////toplevel
   difference(){
     CoverTest2();
-    translate([0,0, -10])
-      cube([ main_dia*3, main_dia * .85, 20], center=true);
+    for (r= [ 40, 147 ]){
+      rotate([0,0, r]){
+	translate([0,0, -10]) {
+	  cube([ main_dia*3, main_dia * .55, 20], center=true);
+	}
+      }
+    }
   }
 }