ft-scout-elevator-reinforcement.scad

   1 infty = 100;
   2 eps = 0.01;
   3
   4 center_l = 16;
   5 foam_w = 3.25;
   6 center_thick = 0.8;
   7 side_thick = 0.8;
   8
   9 body_w = center_l + 2*9;
  10 front_l = 5;
  11 rear_l = 8;
  12
  13 side_angle = 40; // smaller is narrower part (angle from the direction of flight)
  14
  15 rotate([180, 0, 0]) // print it upside down
  16 difference() {
  17         // main body
  18         translate([-foam_w/2-side_thick, -body_w/2, -rear_l-center_thick])
  19                 cube([foam_w + 2*side_thick, body_w, rear_l + center_thick + front_l]);
  20         // front slot
  21         translate([-foam_w/2, -body_w/2-eps, 0])
  22                 cube([foam_w, body_w+2*eps, front_l + eps]);
  23         // inner slanted sides
  24         for(y = [-1, 1]) scale([1, y, 1])
  25         translate([0, center_l/2, 0])
  26         rotate([side_angle, 0, 0])
  27         translate([-foam_w/2, 0, -infty/2])
  28                 cube([foam_w, infty, infty]);
  29         // outer hole for rudder
  30         intersection() {
  31                 hull() for (y = [-1:1]) scale([1, y, 1]) {
  32                         translate([0, center_l/2, 0])
  33                         rotate([side_angle, 0, 0])
  34                         translate([-infty/2, -center_thick, -infty])
  35                                 cube([infty, eps, infty]);
  36                 }
  37                 translate([-infty/2, -infty/2, -infty-center_thick])
  38                         cube(infty);
  39         }
  40         // debug
  41         // translate([-infty, -infty/2, -infty/2])
  42         //      cube(infty);
  43 }