// will fit tightly into the hole with inner diameter
// d1 + tight_fit_diam_diff
-thin_wall = 0.9; // depends on the print width
+thin_wall = 1.0; // depends on the print width
thick_wall = 2*thin_wall + loose_fit_diam_diff/2;
// motor_diam + 2*thick_wall is the outer diameter of the rocket
motor_wall = thick_wall; // above the motor
clip_height = 3.5;
-clip_clearance = segment_overlap/4;
+clip_width = 1.2;
+clip_clearance = 1.0;
clip_inner_space = motor_diam/2 - 1.5;
rod_diam = 3.4 + 1;
rubber_beam_height = 3;
+rubber_beam_width = 1.5;
fin_thickness = 1;
eps = 0.01;
-infty = 1000;
+infty = 250;
//----------------- MOTOR MODULE -----------------------------
};
// motor clip
- rotate([0, 0, 120]) intersection() {
+ for (angle = [120, -120]) rotate([0, 0, angle]) intersection() {
translate([clip_inner_space, -infty/2,
motor_len + motor_wall + clip_clearance])
- cube([thin_wall, infty, clip_height]);
+ cube([clip_width, infty, clip_height]);
rotate([0, 0, -60])
translate([-infty/2, 0, 0]) cube(infty);
rotate([0, 0, -120])
// -------------------- CENTRAL TUBE ---------------------
-central_tube_h = 85;
+central_tube_h = 97;
central_clip_r = 12;
central_clip_w = 4;
-central_clip_clearance = 1.5;
+central_clip_wall = 1.5;
+central_clip_clearance = 2.5;
module central_tube_solid() {
cylinder(r = motor_diam/2 + thick_wall, h = central_tube_h);
central_tube_h/3]) rotate([0, 90, 0]) difference() {
cylinder(r = central_clip_r, h = central_clip_w);
translate([0, 0, -eps])
- cylinder(r = central_clip_r - thin_wall, h = central_clip_w + 2*eps);
+ cylinder(r = central_clip_r - central_clip_wall, h = central_clip_w + 2*eps);
}
};
};
translate([0, 0, segment_overlap])
bezier_cone([
[ 0, motor_diam/2 + thick_wall ], // start
- [ cone_h/2, motor_diam/2 + thick_wall ], // cp 1
+ [ cone_h/4, motor_diam/2 + thick_wall ], // cp 1
[ cone_h - motor_diam/2 - thick_wall, motor_diam/2 + thick_wall ], // cp 2
[ cone_h, 0 ],
], 40);
translate([0, 0, segment_overlap])
bezier_cone([
[ 0.7*thin_wall, motor_diam/2 + thick_wall - thin_wall ], // start
- [ cone_h/2-0.7*thin_wall, motor_diam/2 + thick_wall - thin_wall], // cp 1
+ [ cone_h/4-0.7*thin_wall, motor_diam/2 + thick_wall - thin_wall], // cp 1
[ cone_h - motor_diam/2 - thick_wall + thin_wall - 1.4*thin_wall, motor_diam/2 + thick_wall - thin_wall ], // cp 2
[ cone_h - 1.4*thin_wall, 0 ],
], 40);
intersection() {
cylinder(r = motor_diam/2 + thin_wall/2, h = segment_overlap);
translate([motor_diam/3-thin_wall/2, -infty/2,
- segment_overlap - rubber_beam_height/2 - eps])
- cube([thin_wall, infty, rubber_beam_height]);
+ segment_overlap - thick_wall - rubber_beam_height - eps])
+ cube([rubber_beam_width, infty, rubber_beam_height]);
};
};
-module thread_holder() {
- rotate([0, 90, 0]) {
- translate([0, 0, -1.5]) difference() {
- cylinder(r = 10, h = 3);
- translate([0, 0, -eps])
- cylinder(r = 8, h = 3 + 2*eps);
- };
- };
-}
-
-// thread_holder();
+debug = 0;
-/*
+if (debug == 1) {
// debug
-difference() {
- // front_cone();
+difference($fn = 16) {
+ front_cone();
// central_tube();
- motor_module();
+ // motor_module();
- translate([0, 0, -eps]) cube(infty);
+ translate([0, 0, -infty/2]) cube(infty);
};
-*/
+
+} else {
// production
-$fn = 128;
+assign($fn = 128) {
translate([motor_diam + thick_wall, 0, 0])
motor_module();
rotate([0, 0, 240])
translate([motor_diam + thick_wall, 0, 0])
front_cone();
+
+}
+}