X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=flyscreen-handle.scad;h=5a535fcd218a5fd0880eb23ef08a1b9c2b5d30bb;hp=d7b8f572aa49a272b388fccd94ad9795fc7fb2c5;hb=4fe16ef67658b640a12f72ec23d6c2877a8ac5dc;hpb=c2bcba321d2c33d933f8fd5451afe93e3a07f47f

diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad
index d7b8f57..5a535fc 100644
--- a/flyscreen-handle.scad
+++ b/flyscreen-handle.scad
@@ -20,6 +20,8 @@ outside_push_inadj = 0.82;
 
 ourcirc_r = 0.5 / 2;
 
+ribble_dia = 2.2;;
+
 opening_protr_slop = 0.1;
 
 intooth_top_slop = 0.1;
@@ -28,6 +30,10 @@ inside_h_xgap = 1;
 pivot_r = 2;
 pivot_slop = 0.25;
 
+strap_above = 0.1;
+strap_th = 2.5;
+strap_below = 3;
+
 width = 5;
 
 // calculated
@@ -47,20 +53,25 @@ P3t = [ P4[0], Q0[1] - openingedge_dia/2 + opening_protrh
 	- intooth_top_slop - ourcirc_r ];
 P2 = P4 + [ -(inside_len - ourcirc_r*2), 0 ];
 P1 = [ P2[0], P3t[1] - (inside_h + ourcirc_r*2) ];
-P9 = [ outside_len - ourcirc_r, outside_gap/2 + ourcirc_r ];
-P8 = P9 + [ 0, outend_height - ourcirc_r*2 ];
+
 P5 = Q0 + p4p5d;
 
-P6t = P5 + [ 0, outside_pushh - ourcirc_r*2 ];
-P7t = [ P6t[0] + (P6t[1] - P1[1]) / outside_pushslope,
-	P1[1] ];
+P8t = [ outside_len - ourcirc_r, P5[1] ];
+P9t = P8t + [ 0, -(strap_above + strap_th + strap_below - ourcirc_r*2) ];
 
-outside_push_inadj_slope = (P3t[1]-P4[1]) / (P6a[1]-P5[1]);
+P9b = [ P9t[0], -P9t[1] + outside_gap ];
+P8b = P9b + [ 0, outend_height ];
+
+P6t = P5 + [ 0, outside_pushh - ourcirc_r*2 ];
+P7 = [ P6t[0] + (P6t[1] - P1[1]) / outside_pushslope,
+       P1[1] ];
 
 P3a = P3t + [ -outside_push_inadj, 0 ];
 P6a = P6t + [ -outside_push_inadj, 0 ];
-P7a = [ P6a[0] + (P6a[1] - P1[1]) / outside_pushslope,
-	P1[1] ];
+
+outside_push_inadj_slope = (P3t[1]-P4[1]) / (P6a[1]-P5[1]);
+
+ribble_rad = ribble_dia/2;
 
 module ExtrusionSect(){
   cr = openingedge_dia/2;
@@ -94,9 +105,11 @@ module PsHull(ps) {
   }
 }
 
-module LeverSect(inadj=false){
+module LeverSect(top, inadj=false){
   P3 = inadj ? P3a : P3t;
-  diag = inadj ? 0 : atan(outside_push_inadj_slope);
+  P8 = top ? P8t : P8b;
+  P9 = top ? P9t : P9b;
+  diag = inadj ? atan(outside_push_inadj_slope) : 0;
   PsHull([P2,P3,P4]);
   difference(){
     PsHull([P0,P1,P2,P5,P8,P9]);
@@ -111,18 +124,34 @@ module LeverSect(inadj=false){
   }
 }
 
+module StrapSect(){
+  translate(P9t) {
+    difference(){
+      circle(r = strap_below + strap_th, $fn=40);
+      circle(r = strap_below,            $fn=40);
+    }
+  }
+}
+
 module LeverSectTop(){
   difference(){
-    LeverSect(false);
+    union(){
+      LeverSect(true, false);
+      for (x = [ P8t[0] + ourcirc_r - ribble_rad :
+		 -ribble_rad * 4 :
+		 Q0[0] + edge_or + ribble_rad*2 ]) {
+	translate([x, P5[1] + ourcirc_r])
+	  circle(r = ribble_rad, $fn=20);
+      }
+    }
     translate([pivot_x,0]) circle(r= pivot_r + pivot_slop, $fn=20);
   }
 }
 
 module LeverSectBot(inadj=false){
   P6 = inadj ? P6a : P6t;
-  P7 = inadj ? P7a : P7t;
   mirror([0,1]) {
-    LeverSect(inadj);
+    LeverSect(false, inadj);
     PsHull([P5,P6,P7]);
     translate([pivot_x,0]) circle(r=pivot_r, $fn=20);
   }
@@ -131,7 +160,9 @@ module LeverSectBot(inadj=false){
 module Demo(){
   translate([0,0,-5]) color("white") ExtrusionSect();
   LeverSectTop();
-  LeverSectBot();
+  translate([0,0,5]) LeverSectBot();
+  color("black") LeverSectBot(true);
+  color("blue") translate([0,0,10]) StrapSect();
 }
 
 module LeverTop(){
@@ -148,5 +179,5 @@ module Test(){
   translate([0,-opening_height - 2,0]) LeverBot(true);
 }
 
-//Demo();
-Test();
+Demo();
+//Test();