X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=pull-cord-keeper.scad;h=c8655c9842f942882addc05c8ce758eccbd62858;hp=4812465f1b99be691291c5f658d1b28deb4f511e;hb=9d8e9a751cc561fae994db260ac4925feec2260b;hpb=a8f373ebdb262d84e4820ec1b5ff43bba7d9cf48

diff --git a/pull-cord-keeper.scad b/pull-cord-keeper.scad
index 4812465..c8655c9 100644
--- a/pull-cord-keeper.scad
+++ b/pull-cord-keeper.scad
@@ -11,6 +11,8 @@ blockwidth = hcentredist*2 + 6;
 
 height = 20;
 
+roundedgedia = 7.5;
+
 ziglen = hcentredist/2;
 
 feedxgap = 5;
@@ -33,10 +35,20 @@ module Oval(centredist, rad) {
   }
 }  
 
+module VExtrude(){
+  translate([0,0, -height/2])
+    linear_extrude(height=20)
+    children(0);
+}
+
+module OuterOval(){
+  Oval(hcentredist, houterrad);
+}
+
 module Hoop(){
   difference(){
     hull(){
-      Oval(hcentredist, houterrad);
+      OuterOval();
       translate([0, (blockdepth + hoopthick)/2 + hinnerrad])
 	square([blockwidth,
 		blockdepth + hoopthick],
@@ -46,16 +58,36 @@ module Hoop(){
   }
 }
 
+module RoundEdges(){
+  intersection(){
+    VExtrude()
+      OuterOval();
+
+    for (xi=[-1,1]) {
+      hull(){
+	for (yi=[-1,1]) {
+	  translate([xi * (hcentredist/2 + hinnerrad),
+		     houterrad,
+		     yi * (height/2 - roundedgedia / 4 * sqrt(2))])
+	    rotate([90,0,0])
+	    cylinder(r=roundedgedia/2, h=houterrad*2, $fn=20);
+	}
+      }
+    }
+  }
+}
+
 module Positive(){
   difference(){
-    translate([0,0, -height/2])
-      linear_extrude(height=20)
+    VExtrude()
       Hoop();
 
     rotate([90,0,0])
       translate([0,0,-50])
       cylinder(r=screwholedia/2, h=100);
   }
+
+  RoundEdges();
 }
 
 module Ribs(){
@@ -126,6 +158,22 @@ module Demo(){
   color("blue") B();
 }
 
+module APrint(){ ////toplevel
+  rotate([0,180,0])
+    A();
+}
+
+module BPrint(){ ////toplevel
+  B();
+}
+
+module Kit(){ ////toplevel
+  translate([0, hinnerrad, 0])
+    APrint();
+  rotate([0,0,180])
+    BPrint();
+}
+
 //Ribs();
 //Demo();
 
@@ -135,4 +183,7 @@ module Demo(){
 
 //Hoop();
 
-Demo();
+//Demo();
+//BPrint();
+
+//Kit();