67 lines
1.8 KiB
OpenSCAD
67 lines
1.8 KiB
OpenSCAD
// filter settings
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// this is for the "go around the outside of the filer" style
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wall_thickness = 3; // mm
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wall_height = 4; // mm
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outer_ring_diameter = 181;
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outer_ring_thickness = 7;
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// fan settings
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fan_diameter = 140; // mm
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fan_wall_height = 10;
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fan_base_height = 5;
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fan_base_width = 3;
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fan_screwhole_diameter = 5;
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fan_corner_offset = 5;
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// taper settings
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taper_height = 25;
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// ring
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linear_extrude(wall_height) {
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difference() {
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circle(outer_ring_diameter / 2, $fa = 1);
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circle(outer_ring_diameter/2 - outer_ring_thickness, $fa = 1);
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};
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};
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// fan base
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screw_offset = (fan_diameter / 2) - fan_corner_offset;
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translate([0, 0, -fan_wall_height - taper_height]) {
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linear_extrude(fan_base_height) {
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difference() {
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square(fan_diameter, center = true);
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circle(fan_diameter/2 - fan_base_width, $fa = 1);
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// Screw holes
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translate([screw_offset, screw_offset, 0]) {
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circle(fan_screwhole_diameter / 2, $fa = 1);
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};
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translate([-screw_offset, screw_offset, 0]) {
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circle(fan_screwhole_diameter / 2, $fa = 1);
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};
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translate([screw_offset, -screw_offset, 0]) {
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circle(fan_screwhole_diameter / 2, $fa = 1);
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};
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translate([-screw_offset, -screw_offset, 0]) {
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circle(fan_screwhole_diameter / 2, $fa = 1);
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};
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};
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};
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};
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// taper from fan edge to holder
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translate([0, 0, -fan_wall_height-2]) {
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union() {
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difference() {
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cylinder(taper_height, r1 = fan_diameter / 2, r2 = outer_ring_diameter /2, center = true, $fa = 1);
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cylinder(taper_height, r1 = fan_diameter / 2 - wall_thickness, r2 = outer_ring_diameter /2 - outer_ring_thickness, center = true, $fa = 1);
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};
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translate([0, 0, -19]) {
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linear_extrude(7) {
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difference() {
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circle(fan_diameter/2, $fa = 1);
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circle(fan_diameter/2 - fan_base_width, $fa = 1);
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};
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};
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};
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};
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}; |