X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=4c8f4fc7bdb4b2c625e44343d56cc72f13a9099e;hb=f43f044b77ba4a3765ca8b886a111a4dcbb0436d;hp=d7539f7cab4a9eb9713e2df16df57f3a1a1ee7e6;hpb=512a9827dfda11f2ab26f34b6776fc4a5a7eec54;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index d7539f7..4c8f4fc 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -1,8 +1,9 @@
 // -*- C -*-
 
 main_dia = 71.2 + 0.50 - 2.26;
-top_minthick_middle = 4;
-top_minthick_by_oring = 2.5;
+top_thick_middle = 4;
+top_thick_by_oring = 2.5;
+top_middle_dr = 11;
 
 main_cnr = 4.0;
 
@@ -62,11 +63,13 @@ seal_thick = 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_minthick_middle,
-		top_minthick_by_oring + oring_y_rad);
+top_thick = max(top_thick_middle,
+		top_thick_by_oring + oring_y_rad);
 
 top_z = top_thick + seal_thick;
 
+middle_bot_z = top_z - top_thick_middle;
+
 bayo_entry = bayo_behind / 3.0;
 bayo_top_z = bayo_behind + rivet_thick + bayo_above_gap;
 bayo_entry_ramp = bayo_entry + bayo_interf;
@@ -130,8 +133,8 @@ module MainProfile(){
 	  square([10,10]);
 	}
       }
-      polygon([[ -11,                   top_z - top_minthick_middle ],
-	       [ -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      ],
@@ -200,8 +203,8 @@ module Cover(){ ////toplevel
       rotate_extrude(convexity=10)
 	translate([main_dia/2, 0])
 	MainProfile();
-      translate([0,0, top_z - top_minthick_middle])
-	cylinder(h= top_minthick_middle, r = main_dia/2 - 10);
+      translate([0,0, middle_bot_z])
+	cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
     }
     for (r=[0,180])
       rotate([0,0, r])
@@ -209,8 +212,8 @@ module Cover(){ ////toplevel
 	BayonetCutout();
     for (r=[0 : 60 : 179]) {
       rotate([0,0, r]) {
-	height = top_thick - brace_above_below*2;
-	translate([0,0, seal_thick + brace_above_below + height/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 ]);
       }