115 lines
3.5 KiB
OpenSCAD
115 lines
3.5 KiB
OpenSCAD
/**
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# Parameters
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*/
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$box_inner_width = 15;
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$box_inner_depth = 6;
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$box_inner_height = 15;
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$box_wall_thickness = 6;
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// [0, 1] Higher the ratio, the bigger the bottom will be.
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$box_bottom_top_height_fraction = 0.2;
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// [0, 1] The amount the bottom and top will overlap.
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$overlap_fraction = 0.8;
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// [0, 1] The thickness of the overlap as a fraction of the wall thickness.
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$overlap_thickness_fraction = 0.5;
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// [1, *] Bottom scale. Scale the bottom up by settings this to a small amount like 1.05 to increase the gap between lid and bottom. Raise this number if the lid is too tight and won't go in, lower it if the lid is too loose.
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$bottom_scale = 1.05;
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// [0, 1] Screw scale. Lower this number if the screw is too tight and won't go through the hole.
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$lid_screw_scale = 0.94;
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/**
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# Code
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*/
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include <Thread_Library.scad>;
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$fn = $preview ? 12 : 200;
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$box_outer_width = $box_inner_width + $box_wall_thickness * 2;
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$box_outer_depth = $box_inner_depth + $box_wall_thickness * 2;
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$box_outer_height = $box_inner_height + $box_wall_thickness * 2;
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$bottom_height = $box_inner_height * $box_bottom_top_height_fraction;
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$top_height = $box_inner_height * (1 - $box_bottom_top_height_fraction);
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$overlap_height = $box_inner_height * $overlap_fraction;
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$overlap_thickness = $box_wall_thickness * $overlap_thickness_fraction;
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scale([$lid_screw_scale, $lid_screw_scale, $lid_screw_scale])
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translate([0, 0, 5])
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rotate([90, 0, 0])
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screw();
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difference() {
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scale([$bottom_scale, $bottom_scale, 1])
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bottom();
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thread();
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};
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translate([-10, 0, $bottom_height + $top_height + 2 * $box_wall_thickness])
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rotate([0, 180, 0])
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difference() {
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color("blue")
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translate([$box_outer_width, 0, $bottom_height + $top_height + 2 * $box_wall_thickness])
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rotate([0, 180, 0])
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top();
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thread();
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};
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module top() {
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difference() {
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box_half($box_inner_width, $box_inner_depth, $top_height, $box_wall_thickness);
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translate([-0.002, -0.002, 0])
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scale([1.001, 1.001, 1.001])
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translate([0, 0, $top_height + $bottom_height + $box_wall_thickness * 2])
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color("red")
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mirror([0, 0, 1])
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bottom();
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};
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}
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module bottom() {
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union() {
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box_half($box_inner_width, $box_inner_depth, $bottom_height, $box_wall_thickness);
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box_half(
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$box_inner_width + $box_wall_thickness,
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$box_inner_depth + $box_wall_thickness, $overlap_height + $box_wall_thickness,
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$overlap_thickness
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);
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};
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};
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module box_half($width, $depth, $height, $wall_thickness) {
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difference() {
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cube([
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$width + $wall_thickness * 2,
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$depth + $wall_thickness * 2,
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$height + $wall_thickness
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]);
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translate([$wall_thickness, $wall_thickness, $wall_thickness])
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cube([$width, $depth, $height + 0.1]);
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};
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};
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$thread_z_offset = $bottom_height + $overlap_height / 2 + 7;
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$screw_scale = 0.33;
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module thread(length=$box_wall_thickness * (1/$screw_scale)) {
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color("pink")
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translate([$box_outer_width / 2, $box_wall_thickness + 0.1, $thread_z_offset])
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rotate([90, 0, 0])
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scale([$screw_scale, $screw_scale, $screw_scale])
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trapezoidThread(length=length);
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}
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module screw() {
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color("orange")
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translate([$box_outer_width / 2, 0, $thread_z_offset])
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rotate([90, 0, 0])
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cylinder(h=5, d=15, $fn=6);
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color("red")
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translate([0, 0, 0])
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thread(length=$box_wall_thickness * (1/$screw_scale));
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} |