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new fan design that supports more fan sizes

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This commit is contained in:
David Long
2022-09-12 22:11:55 -04:00
parent 73e70ccf6f
commit d3b19d09ba
1 changed files with 33 additions and 72 deletions
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105
sbc_case_builder_library.scad
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@@ -2414,80 +2414,41 @@ $fn=90;
translate ([4,size-4,-1]) cylinder(h=thick+2, d=3);
translate ([4,4,-1]) cylinder(h=thick+2, d=3);
}
if(style == 2 && size == 40) {
difference() {
union () {
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-2);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-6);
if(style == 2) {
inner = size == 30 ? 24 :
size == 40 ? 32 :
size == 50 ? 40 :
size == 60 ? 50 :
size == 70 ? 61.9 :
size == 80 ? 71.5 :
size * 0.8;
offset = (size - inner) / 2;
translate([0, 0, -1]) difference() {
union() {
// screw holes
translate([offset, offset, 0]) cylinder(d=3, h=thick+2);
translate([size-offset, offset, 0]) cylinder(d=3, h=thick+2);
translate([offset, size-offset, 0]) cylinder(d=3, h=thick+2);
translate([size-offset, size-offset, 0]) cylinder(d=3, h=thick+2);
// fan grates
translate_xy = size * 0.5;
base_ring_size = size * 0.9;
ring_height = thick + 2;
ring_diff_height = ring_height + 2;
render() { // Necessary for large fan masks or else you get tree normalization errors
for(i=[0:2:inner]) {
difference() {
translate([translate_xy, translate_xy, 0]) cylinder(d=base_ring_size - 2*i, h=ring_height);
translate([translate_xy, translate_xy, -1]) cylinder(d=base_ring_size - 2*(i+1), h=ring_diff_height);
}
}
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-10);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-14);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-18);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-22);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-26);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-30);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-34);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-38);
}
// translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-34);
// mount holes
translate ([size-4,size-4,-1]) cylinder(h=thick+2, d=3);
translate ([size-4,4,-1]) cylinder(h=thick+2, d=3);
translate ([4,size-4,-1]) cylinder(h=thick+2, d=3);
translate ([4,4,-1]) cylinder(h=thick+2, d=3);
}
translate([6.5,5,-2]) rotate([0,0,45]) cube([size,2,thick+4]);
translate([4.5,size-6,-2]) rotate([0,0,-45]) cube([size,2,thick+4]);
}
}
if(style == 2 && size >= 80) {
difference() {
union () {
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-2);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-8);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-14);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-20);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-26);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-32);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-38);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-44);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-50);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-56);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-62);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-68);
}
difference() {
translate ([size/2,size/2,-1]) cylinder(h=thick+2, d=size-74);
translate ([size/2,size/2,-2]) cylinder(h=thick+4, d=size-79);
}
// mount holes
translate ([size-4,size-4,-1]) cylinder(h=thick+2, d=3);
translate ([size-4,4,-1]) cylinder(h=thick+2, d=3);
translate ([4,size-4,-1]) cylinder(h=thick+2, d=3);
translate ([4,4,-1]) cylinder(h=thick+2, d=3);
}
translate([6.5,4.25,-2]) rotate([0,0,45]) cube([size*1.2,3,thick+4]);
translate([4.25,size-6.5,-2]) rotate([0,0,-45]) cube([size*1.2,3,thick+4]);
}
// cross bars
translate([0, (size*0.5)-1.5, -1]) cube([size, 3, 12]);
translate([(size*0.5)-1.5,0 -1]) cube([3, size, 12]);
}
}
}