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-rw-r--r--fanduct.scad3
1 files changed, 2 insertions, 1 deletions
diff --git a/fanduct.scad b/fanduct.scad
index 6407a96..49ab4c2 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -175,105 +175,106 @@ module fanduct(type=type,ductshape=ductshape,dual=dual) {
}/*union*/
}/*airguides*/
}
module jets(what) {
od = fanduct_h*2/3+fanduct_shell;
md = fanduct_ir+fanduct_shell+fanduct_w/2;
jww = 2*md*sin(jet_angle/2);
difference() {
for(a=[0:120:359]) rotate([0,0,a]) {
if(what=="in") {
hull() {
intersection() {
translate([md-fanduct_w/2,-jww/2,0])
cube(size=[fanduct_shell+fanduct_w/2,jww,od]);
duct(what=what);
}
translate([0,0,-fanduct_elevation]) sphere(r=.5);
}
}else if(what=="out") {
hull() {
intersection() {
translate([md-fanduct_w/2,-jww/2+fanduct_shell,fanduct_shell])
cube(size=[fanduct_w/2,jww-2*fanduct_shell,od-2*fanduct_shell]);
duct(what=what);
}
translate([0,0,-fanduct_elevation]) sphere(r=.2);
}
}
}
if(what=="in") {
translate([0,0,-fanduct_elevation-2+epsilon])
cylinder(r=fanduct_ir+fanduct_shell*2+fanduct_w+1,h=fanduct_elevation+2);
translate([0,0,-hotend_clearance])
rotate([0,0,30])
cylinder(r1=hotend_clearance*2,r2=0,h=hotend_clearance*2,$fn=6);
}
}
}
module dual(what=what) {
module hulls(spots=dual_spots) {
for(my=[0,1]) mirror([0,my,0]) for(pn=[0:1:len(spots)-2]) hull() {
for(p=[spots[pn],spots[pn+1]]) translate(p) children(0);
children([1:$children-1]);
}
}
if(what=="in") {
+ cfn= 4; // clearance cutout $fn
difference() {
hulls() {
cylinder(d=fanduct_w+2*fanduct_shell,h=2*fanduct_shell+fanduct_h/2);
translate([0,-nozzles_apart/2,-fanduct_elevation-fanduct_blowtarget]) sphere(d=.1);
}
translate([0,0,epsilon]) hull() for(my=[0:1]) mirror([0,my,0]) for(s=dual_spots) translate(s)
mirror([0,0,1]) cylinder(d=fanduct_w+2*fanduct_shell+2,h=fanduct_elevation-fanduct_blowtarget+1);
for(s=[-1,1]) translate([0,s*nozzles_apart/2,-1])
- rotate([0,0,45]) cylinder(r=hotend_clearance,h=fanduct_h+2*fanduct_shell+2,$fn=4);
+ rotate([0,0,180/cfn]) cylinder(r=hotend_clearance/cos(180/cfn),h=fanduct_h+2*fanduct_shell+2,$fn=cfn);
}
}else if(what=="out") {
hulls() {
translate([0,0,fanduct_shell]) cylinder(d=fanduct_w,h=fanduct_h/2-fanduct_shell/2);
translate([0,-nozzles_apart/2,-fanduct_elevation+fanduct_blowtarget]) sphere(d=.1);
}
}else if(what=="airguides") {
far = fanduct_ir+fanduct_shell+fanduct_w;
near = fanduct_ir;
union() {
for(my=[0,1]) mirror([0,my,0]) {
guideline([ [-far ,0], [0,0] ]);
guideline([ [-far ,inlet_w/2/4],
[-near ,nozzles_apart/2] ]);
guideline([ [-near-fanduct_w/3,nozzles_apart/2+near+fanduct_w/3] ]);
guideline([ [0 ,nozzles_apart/2+near+fanduct_w/2] ]);
}
}
}
}
if(dual) dual(what);
else if(type=="circular") circus(what);
else if(type=="3jets") jets(what);
}
// *** air intake
module intake(what) {
module placeit() {
translate([-fanduct_ir-2*fanduct_shell-fanduct_w-inlet_away,0,fanduct_shell])
rotate([0,-90,0])
children();
}
if(what=="in") {
placeit() translate([0,-inlet_w/2,0]) {
difference() {
cube(size=[inlet_h,inlet_w,inlet_long_l+fanduct_shell]);
translate([inlet_h+fanduct_shell,0,inlet_long_l+fanduct_shell])
rotate([-90,0,0])
translate([0,0,-1])
cylinder(r=inlet_h,h=inlet_w+2*fanduct_shell+2,$fn=inlet_h*4);
}
// supports
for(i=[-1,0,1])
translate([-fanduct_shell,
(i+1)*(inlet_w-extrusion_width)/2,
-inlet_away-fanduct_w/2])
cube(size=[fanduct_shell,