X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=f2056fda73baa37f2c3298873cfb3126968aba67;hb=f27401d5b8c98a0c17677865d0e75b9998bb683b;hp=64de31b07df509fa761078227a27fb649ec5556c;hpb=5466474336d93afb0ac2e0b217960da817c2e468;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 64de31b..f2056fd 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -9,6 +9,8 @@ top_middle_dr = 11;
 
 main_cnr = 6.0;
 
+min_wall = 4;
+
 rivet_posn = 6.0;
 rivet_thick = 1.67;
 rivet_width = 4.15 + 1.0;
@@ -28,6 +30,10 @@ oring_bore = 62.0;
 oring_upper_embed_angle = 80;
 oring_compress = 0.05; // proportion
 
+oring_rm_beside = 5;
+oring_rm_scale = 2.0;
+oring_rm_angle = 20;
+
 side_taper = 1.0;
 
 bayo_above_gap = 1.0;
@@ -77,6 +83,8 @@ rivet_entry_width = rivet_width + side_rivet_gap;
 
 jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
 
+handling_dia = oring_bore + oring_thick*2 + min_wall*2;
+
 $fs= coarse ? 2.5 : 0.5;
 $fa= coarse ? 5 : 1;
 
@@ -155,6 +163,10 @@ module MainProfile(){
   }
 }
 
+module HandlingProfile(){
+//  translate([
+}
+
 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
   // nom_rad > real_rad
   rotate([0,0, atan2(offset, nom_rad) ]){
@@ -196,7 +208,16 @@ module ProfilesDemo(){ ////toplevel
   translate([+10,0]) polygon(bayo_polygon, convexity=10);
 }
 
+module LimitForHandling(){ ////toplevel
+  for (r=[0,180])
+    rotate([0,0,r]) {
+      
+    }
+  cylinder(r= handling_dia/2, h=20);
+}
+
 module Cover(){ ////toplevel
+  %LimitForHandling();
   render() difference(){
     union(){
       rotate_extrude(convexity=10)
@@ -205,10 +226,18 @@ module Cover(){ ////toplevel
       translate([0,0, middle_bot_z])
 	cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
     }
-    for (r=[0,180])
+    for (r=[0,180]){
       rotate([0,0, r])
 	translate([0,0, -side_height])
 	BayonetCutout();
+      rotate([0,0, r + asin((bayo_d[0] - oring_rm_beside) / (main_dia/2))])
+	translate([0,
+		   oring_mid_dia/2 + oring_thick/4 * oring_rm_scale,
+		   oring_y_rad * 1.5])
+	rotate([-oring_rm_angle, 0, 0])
+	mirror([0,0,1])
+	cylinder(r = oring_thick/4 * oring_rm_scale, h=20);
+    }
     for (r=[0 : 60 : 179]) {
       rotate([0,0, r]) {
 	height = top_thick_middle - brace_above_below*2;