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=495b238b6ce6912ddc06d70b6a69a6b1f972b687;hpb=f2851bc1c20acda6ddd91c0ce0e0471511fe6ccc;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 495b238..f2056fd 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -1,18 +1,22 @@
 // -*- C -*-
 
+coarse = false;
+
 main_dia = 71.2 + 0.50 - 2.26;
 top_thick_middle = 4;
 top_thick_by_oring = 3.0;
 top_middle_dr = 11;
 
-main_cnr = 4.0;
+main_cnr = 6.0;
+
+min_wall = 4;
 
 rivet_posn = 6.0;
 rivet_thick = 1.67;
 rivet_width = 4.15 + 1.0;
-rivet_tall = 5.51 + 0.49;
+rivet_tall = 5.51 + 1.49;
 
-over_rivet_wall = 0.5;
+over_rivet_wall = 1.0;
 side_rivet_gap = 1.5;
 
 bayo_interf = 1.25;
@@ -24,7 +28,11 @@ oring_thick = 5.0;
 oring_bore = 62.0;
 
 oring_upper_embed_angle = 80;
-oring_compress = 0.1; // proportion
+oring_compress = 0.05; // proportion
+
+oring_rm_beside = 5;
+oring_rm_scale = 2.0;
+oring_rm_angle = 20;
 
 side_taper = 1.0;
 
@@ -32,7 +40,7 @@ bayo_above_gap = 1.0;
 
 bayo_entry = bayo_behind/3;
 
-bayo_slice_size = 1;
+bayo_slice_size = coarse ? 5 : 1;
 
 brace_hole_width = 1.0;
 brace_above_below = 1.2;
@@ -75,8 +83,10 @@ rivet_entry_width = rivet_width + side_rivet_gap;
 
 jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
 
-$fs=0.5;
-$fa=1;
+handling_dia = oring_bore + oring_thick*2 + min_wall*2;
+
+$fs= coarse ? 2.5 : 0.5;
+$fa= coarse ? 5 : 1;
 
 // bayonet definition
 
@@ -153,6 +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) ]){
@@ -194,7 +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)
@@ -203,10 +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;
@@ -252,8 +283,13 @@ 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, 18], center=true);
+	}
+      }
+    }
   }
 }