X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=d6cd360ddc1c60e3f8709065fa8ce3370703e997;hb=3a48bcb0bb3b3b9192d0b9850312d911113b02da;hp=498a4a94603bc9411ba161d3601e4e4a0d370fdd;hpb=a3626ebc9ac5cfe32d97bd0b5c1e514643c1efe2;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 498a4a9..d6cd360 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -9,26 +9,27 @@ top_middle_dr = 11;
 
 main_cnr = 6.0;
 
-min_wall = 4;
+min_wall = 3;
 
-rivet_posn = 6.0;
+rivet_posn = 6.0 + 0.6;
 rivet_thick = 1.67;
 rivet_width = 4.15 + 1.0;
 rivet_tall = 5.51 + 1.49;
 
 over_rivet_wall = 1.0;
 side_rivet_gap = 1.5;
+inside_rivet_gap = 1.5;
 
-bayo_interf = 1.25;
+bayo_interf = 0.85;
 bayo_behind = 3.5;
 bayo_interf_width = 2.0;
-bayo_interf_slope = 0.75;
+bayo_interf_slope = 0.5;
 
 oring_thick = 5.0;
 oring_bore = 62.0;
 
 oring_upper_embed_angle = 80;
-oring_compress = 0.05; // proportion
+oring_compress = 0.1; // proportion
 
 oring_rm_beside = 8;
 oring_rm_scale = 2.0;
@@ -36,7 +37,7 @@ oring_rm_angle = 20;
 
 side_taper = 1.0;
 
-bayo_above_gap = 1.0;
+bayo_gap = 6.0;
 
 bayo_entry = bayo_behind/3;
 
@@ -51,6 +52,11 @@ jig_hole_dia = 3.0;
 jig_rim = 5;
 jig_mark = 5;
 
+strap_hoop_thick = 6;
+strap_hoop_inside = 10;
+strap_hoop_strlen = 10;
+strap_hoop_elevation = 45;
+
 // calculated
 
 bayo_entry_x = bayo_entry;
@@ -76,8 +82,7 @@ top_z = top_thick_by_oring + oring_y_rad + by_oring_z;
 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;
+bayo_top_z = bayo_behind + bayo_gap;
 
 rivet_entry_width = rivet_width + side_rivet_gap;
 
@@ -98,9 +103,8 @@ bayo_m = [ bayo_inramp_x, bayo_behind ];
 bayo_l = bayo_m + bayo_interf * [ 1/bayo_interf_slope,  1 ];
 bayo_k = bayo_l + [ bayo_interf_width, 0 ];
 bayo_j = bayo_k + bayo_interf * [ 1/bayo_interf_slope, -1 ];
-bayo_i = bayo_j + [ rivet_width, 0 ];
-bayo_h = [ bayo_i[0], bayo_behind + rivet_thick
-	              + bayo_above_gap + bayo_interf ];
+bayo_i = bayo_j + [ rivet_width + inside_rivet_gap, 0 ];
+bayo_h = [ bayo_i[0], bayo_behind + bayo_gap + bayo_interf ];
 bayo_g = [ bayo_m[0] - rivet_width, bayo_h[1] ];
 
 bayo_e = [-bayo_p[0], bayo_p[1]] - [rivet_entry_width,0];
@@ -164,6 +168,38 @@ module MainProfile(){
   }
 }
 
+module StrapHoopProfile(){
+  circle(r = strap_hoop_thick/2);
+}
+
+module StrapHoop(){ ////toplevel
+  bigrad = strap_hoop_inside/2 + strap_hoop_thick/2;
+  extralen = strap_hoop_thick * 5;
+
+  intersection(){
+    rotate([strap_hoop_elevation, 0,0]){
+      for (x= [ -1, +1 ] * bigrad) {
+	translate([x, -extralen, 0])
+	  rotate([-90,0,0])
+	  linear_extrude(height= extralen + strap_hoop_strlen + 0.1,
+			 convexity=10)
+	  StrapHoopProfile();
+      }
+      translate([0, strap_hoop_strlen, 0]){
+	intersection(){
+	  rotate_extrude(convexity=10)
+	    translate([bigrad, 0,0])
+	    StrapHoopProfile();
+	  translate([0,50,0])
+	    cube([100,100,100], center=true);
+	}
+      }
+    }
+    translate([0, 50, 0])
+      cube(100, center=true);
+  }
+}
+
 module HandlingProfile(){
 //  translate([
 }
@@ -207,7 +243,7 @@ module BayonetCutout(){
 
 module ProfilesDemo(){ ////toplevel
   translate([-10,0]) MainProfile();
-  translate([+10,0]) polygon(bayo_polygon, convexity=10);
+  translate([+10, -side_height]) polygon(bayo_polygon, convexity=10);
 }
 
 module LimitForHandling(){ ////toplevel
@@ -269,6 +305,10 @@ module Cover(){ ////toplevel
       }
     }
   }
+  translate(strap_hoop_thick * [-0.5, 0, +1])
+    translate([handling_dia/2, 0, -side_height])
+    rotate([0,180,0]) rotate([0,0,90])
+    StrapHoop();
 }
 
 module SavingHole(){
@@ -305,12 +345,19 @@ module CoverTest2(){ ////toplevel
 module CoverTest1(){ ////toplevel
   difference(){
     CoverTest2();
-    for (r= [ 40, 147 ]){
-      rotate([0,0, r]){
-	translate([0,0, -10]) {
-	  cube([ main_dia*3, main_dia * .55, 18], center=true);
+    difference(){
+      for (r= [ 40, 147 ]){
+	rotate([0,0, r]){
+	  translate([0,0, -10]) {
+	    cube([ main_dia*3, main_dia * .55, 18], center=true);
+	  }
 	}
       }
+      translate([ 50, 0, 0 ])
+	cube([ 100,
+	       strap_hoop_inside + strap_hoop_thick*2 + 1,
+	       100 ],
+	     center=true);
     }
   }
 }