X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=flyscreen-handle.scad;h=bfdec5e04d1f2f6095e162e7d686053c9307cb21;hb=5fb32b6bb162a9cb83c40153693f653d9dd0ec36;hp=3a7e7f9719729479df5bc26d2dfdf5f6dc0d2fb2;hpb=efe66e97688a445eb96db3c0f3f4d805ab644113;p=reprap-play.git

diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad
index 3a7e7f9..bfdec5e 100644
--- a/flyscreen-handle.scad
+++ b/flyscreen-handle.scad
@@ -1,12 +1,19 @@
 // -*- C -*-
 
-opening_height = 7.84;
+opening_height = 7.84 - 0.3;
 opening_depth = 7.88;
 openingcnr_dia = 2.75;
 opening_topprotr = 1.54;
 
 gap = 0.25;
 
+retain_empir_angle = 20;
+retain_empir_stalkw = 0.8;
+retain_rad = 1.65;
+retain_empir_inward = 0.65;
+
+topprotr_rad = 0.35;
+
 bot_overlap = 5;
 bot_w = 3;
 
@@ -15,6 +22,8 @@ handle_w = 8;
 handle_rh = 2;
 handle_rcut = 3;
 
+cutout_gap = 1.5;
+
 // calculated
 
 ins_irad = openingcnr_dia/2 + gap;
@@ -29,7 +38,12 @@ handle_y1 = handle_y0 + handle_h;
 handle_x1 = handle_x0 + bot_w + handle_w;
 
 module InsertSection(){
-  translate([-ins_orad, 0]) square([ins_th, opening_topprotr]);
+  hull(){
+    translate([-ins_orad, 0]) square([ins_th, 0.1]);
+    translate([-ins_irad - topprotr_rad,
+	       opening_topprotr - topprotr_rad])
+      circle(r=topprotr_rad, $fn=10);
+  }
   translate([0, -ins_orad]) square([ins_irad+1, ins_th]);
   intersection(){
     translate([0.1,0.1]) mirror([1,1]) square([100,100]);
@@ -59,7 +73,70 @@ module HandleSection(){
       }
     }
   }
+  hull(){
+    for (y= [handle_y1 -   handle_rh/2,
+	     handle_y1 - 3*handle_rh/2])
+      translate([handle_x1 - handle_rh/2, y])
+	circle(r = handle_rh/2, $fn=20);
+  }
+}
+
+module RetainSection(){
+  rotate(180-retain_empir_angle)
+    translate([0, ins_orad - retain_empir_inward])
+    circle(r=retain_rad, $fn=20);
+}
+
+module RetainCutout(gapping=false){
+  rotate(180-retain_empir_angle)
+    translate([0, ins_orad - retain_empir_inward]) {
+    difference(){
+      circle(r=retain_rad + cutout_gap, $fn=20);
+      if (!gapping)
+	rotate(180 + retain_empir_angle/2)
+	  translate([0, -retain_empir_stalkw])
+	  square([100, retain_empir_stalkw*2]);
+    }
+  }
+}  
+
+module GappingSection(){
+  difference(){
+    InsertSection();
+    RetainCutout(true);
+  }
+  HandleSection();
+}
+
+module WithRetainSection(){
+  difference(){
+    InsertSection();
+    RetainCutout();
+  }
+  HandleSection();
+  RetainSection();
+}
+
+module BasicSection(){
+  InsertSection();
+  HandleSection();
+}
+
+module Demo(){
+  difference(){
+    InsertSection();
+    RetainCutout();
+  }
+  HandleSection();
+  color("red") RetainSection();
+}
+
+module Test(){
+  linear_extrude(height=2) WithRetainSection();
 }
 
-InsertSection();
-HandleSection();
+//Demo();
+WithRetainSection();
+//BasicSection();
+//GappingSection();
+//Test();