sixteenmillimeter-tools/models/2in_core/2in_core.scad

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time=0;
module core (outerWidth) {
coreH = 16;
innerWidth = 15.3;
outerWidth = outerWidth / 2;
$fn = 100;
module cyl (R, pad = 0) {
cylinder(r = R, h = coreH + pad, center = true);
}
module inner_core_shape (coreR, trans, cubeW, cubeL, pad = 0) {
union () {
cyl(coreR, pad);
translate([trans, 0, 0]) {
cube([cubeW, cubeL, coreH + pad], center = true);
}
}
}
module inner_core () {
difference () {
inner_core_shape(innerWidth, innerWidth + .5, 6, 7);
inner_core_shape(innerWidth - 2, innerWidth - .5, 4, 4, 2);
}
}
module clip () {
translate([outerWidth - 2, 0, 0]) {
rotate(45, [0, 0, 1]){
cube([6, 1, coreH], center = true);
}
}
}
module outer_clip () {
translate([outerWidth - 2, 0, 0]) {
difference() {
rotate(45, [0, 0, 1]){
cube([8, 4, coreH], center = true);
}
translate([3.9, 0, 0]) {
cube([6, 8, coreH + 1], center = true);
}
}
}
}
module outer_core () {
difference () {
union () {
difference () {
cyl(outerWidth);
cyl(outerWidth - 2, 1);
}
outer_clip();
}
clip();
}
}
module supports (x) {
for (i = [0 : x]) {
rotate ([0, 0, i * 360 / (x + 1)]) {
if (i == 0) {
translate ([innerWidth + ((outerWidth - innerWidth) / 2) - 1, 0, 0]) {
cube([outerWidth - innerWidth - 5.7, 2, coreH] ,center = true);
}
} else {
translate ([innerWidth + ((outerWidth - innerWidth) / 2) - 1, 0, 0]) {
cube([outerWidth - innerWidth - 1, 2, coreH] ,center = true);
}
}
}
}
}
union () {
inner_core();
outer_core();
supports(6);
}
}
rotate([0,0, time]) core(50);