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-rw-r--r--fanduct.scad17
1 files changed, 15 insertions, 2 deletions
diff --git a/fanduct.scad b/fanduct.scad
index 53630a3..746f753 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -23,44 +23,57 @@ jet_angle = 60-2; // angular width of the jet
inlet_w = 12.5; // inlet width
inlet_h = 17; // inlet height
inlet_l = 7; // inlet length of protrusion (or depth of intrusion:))
inlet_away = 15; // how far away inlet is
hotend_clearance = heater_clearance;
snapper_d = 8; snapper_overlap=0.2; // snip snap
smooth_f = 120;
type="3jets"; // "3jets" ; // circular|3jets
+ductshape="square"; // square|round
-module fanduct(type=type) {
+module fanduct(type=type,ductshape=ductshape) {
// *** duct is all around!
module duct(what) {
if(what=="in") {
sh = fanduct_w+2*fanduct_shell; sv = fanduct_h+2*fanduct_shell;
smax = max(sh,sv);
rotate_extrude($fn=smooth_f)
+ if(ductshape=="round")
translate([sh/2+fanduct_ir,sv/2])
scale([sh/smax,sv/smax])
circle(d=smax,$fn=4*smax);
+ else if(ductshape=="square")
+ translate([fanduct_ir,0])
+ square([sh,sv]);
}else if(what=="out") {
sh = fanduct_w; sv = fanduct_h;
smax = max(sh,sv);
rotate_extrude($fn=smooth_f)
+ if(ductshape=="round")
translate([sh/2+fanduct_shell+fanduct_ir,sv/2+fanduct_shell])
scale([sh/smax,sv/smax])
circle(d=smax,$fn=4*smax);
+ else if(ductshape=="square")
+ translate([fanduct_ir+fanduct_shell,fanduct_shell])
+ union() {
+ square([fanduct_w,fanduct_h/2]);
+ translate([fanduct_w/2,fanduct_h-fanduct_w/2])
+ rotate([0,0,90]) circle(d=fanduct_w,$fn=36);
+ }
}
}
// *** bumps for easier position adjustments in line with hotend
module marks(what) {
if(what=="in") {
for(y=[-1,1])
hull() for(z=[0,-fanduct_shell-fanduct_h/2])
translate([0,y*(fanduct_ir+fanduct_shell+fanduct_w/2),fanduct_shell*2+fanduct_h+z])
rotate([90,0,0]) {
cylinder(r=fanduct_shell,h=fanduct_w,center=true,$fn=30);
for(z=[-1,1]) translate([0,0,z*fanduct_w/2])
@@ -231,25 +244,25 @@ module fanduct(type=type) {
}
intersection() {
union() {
output("airguides");
sphere(d=epsilon);
}
union() {
duct("in"); output("in"); intake("in");
}
}
}
-view="full"; // hcut|vcut|*
+view="vcut"; // hcut|vcut|*
hinfinity=4*(fanduct_ir+fanduct_shell*2+fanduct_w+inlet_away);
vinfinity=2*(fanduct_shell*2+fanduct_h+inlet_h);
if(view=="hcut") {
difference() {
fanduct();
translate([-hinfinity/2,-hinfinity/2,fanduct_shell+fanduct_h/2])
cube(size=[hinfinity,hinfinity,vinfinity]);
}
}else if(view=="vcut") {
difference() {
fanduct();