lock-inframe-bracket: Wip DividePlan

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/lock-inframe-bracket.scad b/lock-inframe-bracket.scad
index f729fbd55904dfa2f605e569bd8901fba8924973..b688252eda9bb38be3beee4e13efba54a8201633 100644 (file)
--- a/lock-inframe-bracket.scad
+++ b/lock-inframe-bracket.scad
@@ -35,12 +35,15 @@ join_cr = 9;
 
 tube_rear_extra_th = 1;
 
-divide_shaft_w = 3;
-divide_shaft_l = 3;
-divide_head_dx = 3;
-divide_head_th = 3;
-divide_gap = 0.75;
-divide_heads = 2;
+divide_shaft_w = 1.5;
+divide_shaft_l = 1.5;
+divide_head_dx = 1.5;
+divide_head_th = 1.5;
+divide_gap = 0.50;
+divide_heads = 1;
+
+divide_angle = 35;
+divide_fudge_r = 3;
 
 // calculated
 
@@ -89,54 +92,76 @@ module JoinCircs(jr){
 }
 
 module DividePlan(){
+  w = divide_shaft_w;
   g = divide_gap;
+  l = divide_shaft_l + g;
+  t = divide_head_th + g;
   dx = divide_head_dx;
   for (m=[0,1]) mirror([m,0]) {
-    translate([divide_shaft_w, 0]) square([10, g]);
+    translate([w, 0]) square([10, g]);
     for (i=[0:divide_heads-1]) {
-      translate([divide_shaft_w, i*(divide_shaft_l + divide_head_th)]) {
-       translate([0, 0]) square([g, divide_shaft_l + g]);
-       translate([0, divide_shaft_l]) square([divide_head_dx + g, g]);
-       translate([dx, divide_shaft_l]) square([g, divide_head_th + g]);
-       translate([0, divide_shaft_l + divide_head_th])
+      translate([w, i*(l + t)]) {
+       translate([0, 0]) square([g, l + g]);
+       translate([0, l]) square([divide_head_dx + g, g]);
+       translate([dx, l]) square([g, t + g]);
+       translate([0, l + t])
          square([divide_head_dx + g, g]);
       }
     }
-    translate([-0.1, (divide_shaft_l + divide_head_th) * divide_heads])
-      square([divide_shaft_w + g, g]);
+    translate([-0.1, (l + t) * divide_heads])
+      square([w + g, g]);
   }
 }
 
+module DividePlanInPlace(){
+  rotate([0,0, -divide_angle])
+    translate([ -tube_dia/2 -tube_th/2 - divide_fudge_r, 0])
+    DividePlan();
+}
+
 module MainPlan(){
   difference(){
     union(){
-      hull(){
-       for (t=[0, tube_rear_extra_th])
-         translate([0, -t])
-           circle(r = tube_or);
-      }
-      translate([-back_ohw,0]) mirror([0,1])
-       square([back_ohw*2, backflange_ymin]);
-
-      translate([0, lock_0y]){
-       oval(lock_or);
+      difference(){
+       union(){
+         hull(){
+           for (t=[0, tube_rear_extra_th])
+             translate([0, -t])
+               circle(r = tube_or);
+         }
+         translate([-back_ohw,0]) mirror([0,1])
+           square([back_ohw*2, backflange_ymin]);
+
+         translate([0, lock_0y]){
+           oval(lock_or);
+         }
+
+         hull(){
+           JoinCircs(0.01);
+           polygon([[0,0], lock_0, [-lock_0[0], lock_0[1]]]);
+         }
+       }
+
+       translate([-back_gap/2,1]) mirror([0,1])
+         square([back_gap, backflange_ymin+2]);
+
+       translate([0, lock_0y]){
+         oval([lock_w/2, lock_d/2]);
+       }
+
+       JoinCircs(join_cr);
       }
 
       hull(){
-       JoinCircs(0.01);
-       polygon([[0,0], lock_0, [-lock_0[0], lock_0[1]]]);
+       minkowski(){
+         DividePlanInPlace();
+         circle(5);
+       }
       }
     }
-
     circle(r = tube_dia/2);
-    translate([-back_gap/2,1]) mirror([0,1])
-      square([back_gap, backflange_ymin+2]);
 
-    translate([0, lock_0y]){
-      oval([lock_w/2, lock_d/2]);
-    }
-
-    JoinCircs(join_cr);
+    DividePlanInPlace();
   }
 }
 
@@ -246,5 +271,7 @@ module TestClipBoltHole(){ //// toplevel
 //%ThroughHoles();
 //TestTopEdge();
 //TestClipBoltHole();
+//DividePlan();
 
 Bracket();
+