X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=sprinkler-spike-receptacle.scad;h=c1ac3b5fc54adc2eb4c3e7747ff4e5184282f60f;hp=0d735df3cf6d6cb55522d1e7f0b63c4d908203c8;hb=b9294866b775e2e1cf938a52d9af54091b860b11;hpb=ef124f5a4c50da59948ff0060ea6ac5ef2de102b

diff --git a/sprinkler-spike-receptacle.scad b/sprinkler-spike-receptacle.scad
index 0d735df..c1ac3b5 100644
--- a/sprinkler-spike-receptacle.scad
+++ b/sprinkler-spike-receptacle.scad
@@ -2,12 +2,12 @@
 
 main_height = 95;
 
-spike_web_thick = 2.52 + 0.5;
+spike_web_thick = 2.52 + 0.75;
 
-spike_top_width = 21.04;
+spike_top_width = 21.04 + 1.5;
 
 spike_botpos_height = 9.5;
-spike_botpos_width = 11.68;
+spike_botpos_width = 11.68 + 0.00;
 
 topwall_width = 1.5;
 
@@ -18,10 +18,20 @@ mount_hole_dia = 4.5;
 mount_head_dia = 7.5;
 mount_hole_th = 2.5;
 
+strap_height = main_height * 0.5;
+
+strap_width = 5.5;
+strap_thick = 2.5;
+strap_around = 2.5;
+strap_fixing_height = 4.0;
+strap_fixing_slope = 1.0;
+
 // calculated
 
 main_width = spike_top_width + topwall_width*2;
 
+pos_web_thick = spike_web_thick + topwall_width*2;
+
 module NegativePlan(){
   x4z =
     (spike_top_width - spike_botpos_width) /
@@ -41,6 +51,21 @@ module NegativePlan(){
 	   [-x0, -5]]);
 }
 
+module SomeMidRounding(sq_size, z_extra) {
+  translate([0,0,-z_extra])
+    linear_extrude(height= main_height + z_extra*2)
+    rotate(45)
+    square( sq_size, center=true );
+}
+
+module PositiveMidRounding(){
+  SomeMidRounding(pos_web_thick*2, 0);
+}
+
+module NegativeMidRounding(){
+  SomeMidRounding(spike_web_thick*2.5, 5);
+}
+
 module PositivePlan(){
   w = main_width;
   translate([ -w/2, 0 ])
@@ -57,22 +82,51 @@ module MultiplySolidifyPlan(th){
   }
 }
 
-module MultiplyForMount(){
+module MultiplyForFixings(){
   for (r=[0:90:270])
     rotate([0,0,r])
     children(0);
 }
 
-module Mount(){
+module FixingsPositive(){
+  // mount
   translate([ -1,
 	      -mount_width/2,
 	      0 ])
     cube([ mount_dist + mount_width/2 + 1,
 	   mount_width,
 	   mount_height ]);
+
+  // strap
+  for (m=[0,1]) mirror([0,m,0]) {
+      translate([main_width/2, 0, strap_height]) {
+	hull(){
+	  translate([ -strap_around,
+		      -pos_web_thick/2,
+		      -(strap_thick + strap_around) / strap_fixing_slope ])
+	    cube([ strap_around,
+		   pos_web_thick/2 - strap_width/2,
+		   0.5 ]);
+	  translate([ -strap_around,
+		      -(strap_around + strap_width/2),
+		      0 ])
+	    cube([ strap_around*2 + strap_thick,
+		   strap_around,
+		   strap_fixing_height ]);
+	}
+	mirror([0,1,0])
+	  translate([ strap_thick,
+		      -strap_width/2,
+		      0 ])
+	  cube([ strap_around,
+		 strap_around + strap_width,
+		 strap_fixing_height ]);
+      }
+    }
 }
 
-module MountHole(){
+module FixingsNegative(){
+  // mount hole
   translate([ mount_dist, 0,0 ]) {
     translate([0,0, -1])
       cylinder(r= mount_hole_dia/2, h= 20, $fn=20);
@@ -84,11 +138,13 @@ module MountHole(){
 module Main(){
   difference(){
     union(){
-      MultiplySolidifyPlan(spike_web_thick + topwall_width*2) PositivePlan();
-      MultiplyForMount() Mount();
+      MultiplySolidifyPlan(pos_web_thick) PositivePlan();
+      PositiveMidRounding();
+      MultiplyForFixings() FixingsPositive();
     }
     MultiplySolidifyPlan(spike_web_thick) NegativePlan();
-    MultiplyForMount() MountHole();
+    NegativeMidRounding();
+    MultiplyForFixings() FixingsNegative();
   }
 }
 
@@ -113,14 +169,32 @@ module PlanTest(){
 }
 
 module MainFitTest(){
+  for (top = [0,1]) {
+    translate([ top * (mount_dist*2 + mount_width), 0,0 ]){
+      intersection(){
+	translate([0, 0, (-main_height + 0.5) * top])
+	  Main();
+	translate([-50,-50,0])
+	  cube([100,100, spike_botpos_height + 1.5]);
+      }
+    }
+  }
+}
+
+module Tests(){
+  translate([-mount_dist*3, 0,0])
+    PlanTest();
+  MainFitTest();
+}
+
+module StrapFixingTest(){
   intersection(){
-    translate([0,0, -main_height + 0.5])
-      Main();
-    translate([-50,-50,0])
-      cube([100,100,100]);
+    Main();
+    translate([ -10, -10, 40 ])
+      cube([ 20, 40, 15 ]);
   }
 }
 
-//PlanTest();
-//Main();
-MainFitTest();
+//Tests();
+//StrapFixingTest();
+Main();