printed modifications

[things.git] / wing-tube-joint.scad

diff --git a/wing-tube-joint.scad b/wing-tube-joint.scad
index e3322dbc640b34925cbbf707a720c7bf3655f39b..95ceef3bc7df9bf1eaf01e54311cecd5c24483cd 100644 (file)
--- a/wing-tube-joint.scad
+++ b/wing-tube-joint.scad
@@ -4,37 +4,96 @@ infty = 200;
 wall = 1.5;
 thin_wall = 0.6;
 
-fuse_tube_d = 8.0;
-fuse_tube_l = 4;
-
-slot_w = 5;
-
-base_w = 60;
-base_l = 25;
-
-module body() {
-       hull() {
-//             translate([-fuse_tube_d/2-wall, -fuse_tube_l/2, 0])
-//                     cube([fuse_tube_d + 2*wall, fuse_tube_l, fuse_tube_d + 2*wall]);
-               translate([0, fuse_tube_l/2, fuse_tube_d/2+wall])
-               rotate([90, 0, 0])
-                       cylinder(r = fuse_tube_d/2+wall, h = fuse_tube_l);
-               translate([-fuse_tube_d/2-wall, -base_l/2+wall/2, 0])
-                       cube([fuse_tube_d + 2*wall, base_l-wall, thin_wall]);
+tube_d = 8.0 + 0.2;
+base_w = 65;
+base_l = 30;
+
+tube_d = 6 + 0.1;
+tube_zoff = 3;
+
+base_w = 65;
+base_l = 30;
+
+tube_l = base_l;
+base_overhang = 0.9; // factor of base_w, base_l
+
+tube_zoff = 2;
+
+module polyhole(r1, h1, fn) {
+    rotate([0,0,180])
+        cylinder(h = h1, r = r1 / cos (180 / fn), $fn = fn);
+}
+
+module body(tube_zoff) {
+       // base
+       // scale([1, base_l/base_w, 1])
+       // cylinder(r = base_w/2, h = thin_wall);
+       translate([-base_w/2, -base_l/2, 0]) cube([base_w, base_l, thin_wall]);
+
+       // diagonal supports
+       for (x = [-1,1])
+       for (y = [-1,1]) 
+       scale([x, y, 1])  hull() {
+               translate([base_overhang*base_w/2-thin_wall/2, base_overhang*base_l/2-thin_wall/2, 0])
+                       cylinder(r = thin_wall/2, h = thin_wall, $fn = 16);
+               translate([0, -tube_l/3+thin_wall/2, 0])
+                       cylinder(r = thin_wall/2, h = tube_zoff + tube_d, $fn = 16);
+       }
+
+       // side supports
+       for (x = [-1,1])
+       for (y = [-1,1]) 
+       scale([x, y, 1])  hull() {
+               translate([base_overhang*base_w/2-thin_wall/2, base_overhang*base_l/2-thin_wall/2, 0])
+                       cylinder(r = thin_wall/2, h = thin_wall, $fn = 16);
+               translate([0, tube_l/2-thin_wall/2, 0])
+                       cylinder(r = thin_wall/2, h = tube_zoff + tube_d, $fn = 16);
+       }
+
+       // under the tube supports
+       for (y = [-1,1]) 
+       scale([1, y, 1])  hull() {
+               translate([0, base_overhang*base_l/2, 0])
+                       cylinder(r = thin_wall/2, h = thin_wall, $fn = 16);
+               translate([-thin_wall/2, 0, 0])
+                       cube([thin_wall, tube_l/2, tube_zoff]);
+       }
+
+       // side bottom tube supports
+       for (x = [-1,1])
+       scale([x, 1, 1]) {
+               translate([tube_d/2, -tube_l/2, 0])
+                       cube([wall, tube_l, tube_zoff + tube_d/2]);
+               translate([tube_d/2+wall, -wall, 0])
+                       cube([wall, 2*wall, tube_zoff + tube_d/2]);
+       }
+
+       // upper cylinder clip
+       translate([0, -tube_l/2, tube_d/2 + tube_zoff])
+       intersection() {
+               rotate([-90, 0, 0]) union() {
+                       cylinder(r = tube_d/2 + wall, h = tube_l, $fn = 16);
+                       translate([0, 0, tube_l/2 - wall])
+                               cylinder(r = tube_d/2 + 2*wall,
+                                       h = 2*wall);
+               }
+               translate([-tube_d/2-2*wall, 0, 0])
+                       cube([tube_d + 4*wall, tube_l, tube_d]);
        }
-       scale([1, base_l/base_w, 1])
-               cylinder(r = base_w/2, h = thin_wall);
 }
 
-module holder() {
+module wing_tube_support(tube_zoff) {
        difference() {
-               body();
-               translate([0, infty/2, fuse_tube_d/2+wall])
-               rotate([90, 0, 0])
-                       cylinder(r = fuse_tube_d/2, h = infty + 2*eps);
-               translate([-slot_w/2, -infty/2, fuse_tube_d/2+wall])
-                       cube([slot_w, infty, fuse_tube_d/2+wall+eps]);
+               body(tube_zoff);
+               // main tube
+               translate([0, -base_l/2-eps, tube_d/2+tube_zoff])
+               rotate([-90, 0, 0])
+                       polyhole(tube_d/2, base_l + 2*eps, 6);
+                       // cylinder(r = tube_d/2, h = base_l + 2*eps, $fn = 6);
+               // upper clip
+               translate([-infty/2, -infty/2, tube_zoff + tube_d + wall])
+                       cube(infty);
        }
 }
 
-holder();
+wing_tube_support(tube_zoff);