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Lomo screw #1

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sixteenmillimeter merged 20 commits from lomo_screw into master 2018-03-05 22:19:42 +00:00
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1 changed files with 10 additions and 8 deletions
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18
models/lomo_bottom_screw/lomo_bottom_screw.scad
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@ -19,7 +19,7 @@ module base () {
}
}
module lomo_bottom_screw () {
module lomo_bottom_screw (LEN = 27.1) {
difference () {
base();
//negative cylinder (reference)
@ -27,23 +27,25 @@ module lomo_bottom_screw () {
//negative plug (reference)
//translate([0, 0, -20]) cylinder(r = 12 / 2, h = 20, center = true, $fn = FINE);
translate([0, 0, -30]) {
metric_thread (diameter=13.6 + .5, pitch=1.5, thread_size = 1.6, length = 20);
translate([0, 0, 0.25]) metric_thread (diameter=13.6 + .5, pitch=1.5, thread_size = 1.6, length = 20);
translate([0, 0, -30]) union() {
metric_thread (diameter=13.6 + .5, pitch=1.5, thread_size = 1.6, length = 21);
translate([0, 0, 0.2]) metric_thread (diameter=13.6 + .5, pitch=1.5, thread_size = 1.6, length = 21);
}
}
difference () {
//outer screw
translate([0, 0, -7.1]) metric_thread (diameter=10, pitch=1.5, length=27.1);
translate([0, 0, -7.1]) metric_thread (diameter=10, pitch=1.5, length=LEN);
translate([0, 0, 26]) cylinder(r = 8, h = 5, center = true, $fn = FINE);
//taper top of screw
translate([0, 0, 19]) difference() {
cylinder(r = 8, h = 3.5, center = true, $fn = FINE);
cylinder(r1 = 6, r2 = 3, h = 4.5, center = true, $fn = FINE);
translate([0, 0, LEN - 4.2]) difference() {
cylinder(r = 8, h = 3, center = true, $fn = FINE);
cylinder(r1 = 6, r2 = 3, h = 3.01, center = true, $fn = FINE);
}
//hollow center
cylinder(r = 3.8 / 2, h = 100, center = true, $fn = 60);
}
}
difference() {
//color("green")