poster-tube-lid: LimitForHandling: adjust thickness

[reprap-play.git] / poster-tube-lid.scad

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 5f71681e263acea01628991ad933928f0bc4bd58..09206a6faafbd9a042418eb347247b01815a8416 100644 (file)
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -9,6 +9,8 @@ top_middle_dr = 11;
 
 main_cnr = 6.0;
 
+min_wall = 3;
+
 rivet_posn = 6.0;
 rivet_thick = 1.67;
 rivet_width = 4.15 + 1.0;
@@ -28,7 +30,7 @@ oring_bore = 62.0;
 oring_upper_embed_angle = 80;
 oring_compress = 0.05; // proportion
 
-oring_rm_beside = 10;
+oring_rm_beside = 8;
 oring_rm_scale = 2.0;
 oring_rm_angle = 20;
 
@@ -81,6 +83,9 @@ 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;
+handling_angle = 45;
+
 $fs= coarse ? 2.5 : 0.5;
 $fa= coarse ? 5 : 1;
 
@@ -159,6 +164,10 @@ 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) ]){
@@ -192,6 +201,7 @@ module BayonetCutout(){
   RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
                main_dia/2 + side_thick, 
                main_dia/2 + rivet_tall)
+    translate([-0.5 * (bayo_a[0] + bayo_d[0]), 0])
     polygon(bayo_polygon, convexity=10);
 }
 
@@ -200,20 +210,49 @@ module ProfilesDemo(){ ////toplevel
   translate([+10,0]) polygon(bayo_polygon, convexity=10);
 }
 
+module LimitForHandling(){ ////toplevel
+  hull() for (r=[0,180])
+    rotate([0,0,r]) {
+      for (rs=[-1,+1]) {
+       for (xd=[0,1]) {
+         rotate([0,0, rs * handling_angle/2]) {
+           translate([rs * xd * main_dia/2 * tan(handling_angle/2),
+                      main_dia/2 + side_thick - main_cnr,
+                      top_z - main_cnr]) {
+             mirror([0,0,1])
+               cylinder(r= main_cnr, h=50);
+             sphere(main_cnr);
+           }
+         }
+       }
+      } 
+    }
+  hull() rotate_extrude(){
+    translate([ handling_dia/2 - main_cnr, top_z - main_cnr ]) {
+      circle(r = main_cnr);
+      mirror([0,1]) square([ main_cnr, 50 ]);
+    }
+  }
+  //cylinder(r= handling_dia/2, h=20);
+}
+
 module Cover(){ ////toplevel
   render() difference(){
-    union(){
-      rotate_extrude(convexity=10)
-       translate([main_dia/2, 0])
-       MainProfile();
-      translate([0,0, middle_bot_z])
-       cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
+    intersection(){
+      union(){
+       rotate_extrude(convexity=10)
+         translate([main_dia/2, 0])
+         MainProfile();
+       translate([0,0, middle_bot_z])
+         cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
+      }
+      LimitForHandling();
     }
     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))])
+      rotate([0,0, r + asin((-oring_rm_beside) / (main_dia/2))])
        translate([0,
                   oring_mid_dia/2 + oring_thick/4 * oring_rm_scale,
                   oring_y_rad * 1.5])