X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=3c60f532ab71708e5b3099b198d7d0785db3509a;hb=026c8b76cdfd7d3f8f6feb70ec71177fde3b3354;hp=a32c8f739a87085c478736b30e2a289f839188d5;hpb=7d517d0416ed12dd6d01951c1a360fd81314c8c8;p=reprap-play.git

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index a32c8f7..3c60f53 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -10,7 +10,7 @@ rivet_thick = 1.67;
 rivet_width = 4.15 + 1.0;
 rivet_tall = 5.51 + 0.49;
 
-over_rivet_gap = 1.0;
+over_rivet_wall = 0.5;
 side_rivet_gap = 1.5;
 
 bayo_interf = 0.75;
@@ -27,6 +27,11 @@ bayo_above_gap = 1.0;
 
 bayo_entry = bayo_behind/3;
 
+bayo_slice_size = 1;
+
+brace_hole_width = 1.0;
+brace_above_below = 1.2;
+
 // calculated
 
 bayo_entry_x = bayo_entry;
@@ -35,18 +40,18 @@ bayo_inramp_x = bayo_entry;
 bayo_inramp_z = bayo_entry;
 
 side_height = rivet_posn + bayo_behind + rivet_thick/2;
-side_thick = rivet_tall + over_rivet_gap;
+side_thick = rivet_tall + over_rivet_wall;
 
 top_z = top_thick + seal_thick;
 
 bayo_entry = bayo_behind / 3.0;
-bayo_top_z = bayo_behind + rivet_thick + over_rivet_gap;
+bayo_top_z = bayo_behind + rivet_thick + bayo_above_gap;
 bayo_entry_ramp = bayo_entry + bayo_interf;
 
 rivet_entry_width = rivet_width + side_rivet_gap;
 
 $fs=0.5;
-$fa=5;
+$fa=1;
 
 // bayonet definition
 
@@ -58,7 +63,7 @@ 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 + over_rivet_gap ];
+bayo_h = [ bayo_i[0], bayo_behind + rivet_thick + bayo_above_gap ];
 bayo_g = [ bayo_m[0] - rivet_width, bayo_h[1] ];
 
 bayo_e = [-bayo_p[0], bayo_p[1]] - [rivet_entry_width,0];
@@ -110,8 +115,40 @@ module MainProfile(){
 	   ]);
 }
 
+module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
+  // nom_rad > real_rad
+  rotate([0,0, atan2(offset, nom_rad) ]){
+    intersection(){
+      translate([-offset, -10, 0])
+	rotate([90,0,0])
+	linear_extrude(height= nom_rad*2)
+	children(0);
+      translate([0,0, -25])
+	cylinder(h=50, r= real_rad);
+      translate([0,0, -25])
+	linear_extrude(height= 50)
+	polygon([ [ 0,0 ],
+		  [ -slice_size, -real_rad*2 ],
+		  [ +slice_size, -real_rad*2 ] ]);
+    }
+  }
+}
+
+module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){
+  offs = [ for (i=[ x_min :
+		    slice_size :
+		    x_max + slice_size ]) i ];
+  echo (offs);
+  for (off=offs)
+    RotateProjectSlice(off, slice_size, nom_rad, real_rad)
+    children(0);
+}
+
 module BayonetCutout(){
-  polygon(bayo_polygon);
+  RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
+		main_dia/2 + side_thick, 
+		main_dia/2 + rivet_tall)
+    polygon(bayo_polygon);
 }
 
 module ProfilesDemo(){
@@ -119,5 +156,30 @@ module ProfilesDemo(){
   polygon(bayo_polygon);
 }
 
+module Cover(){
+  difference(){
+    union(){
+      rotate_extrude()
+	translate([main_dia/2, 0])
+	MainProfile();
+      translate([0,0, seal_thick])
+	cylinder(h= top_thick, r = main_dia/2);
+    }
+    for (r=[0,180])
+      rotate([0,0, r])
+	translate([0,0, -side_height])
+	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 ])
+	cube(center=true, [ main_dia, brace_hole_width, height ]);
+      }
+    }
+  }
+}
+
 //ProfilesDemo();
-BayonetCutout();
+//BayonetCutout();
+//MainProfile();
+Cover();