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authorMichael Krelin <hacker@klever.net>2016-06-13 14:10:26 (UTC)
committer Michael Krelin <hacker@klever.net>2016-06-13 14:10:26 (UTC)
commit96c68b7fc20735d0cacb027827282f070403d885 (patch) (side-by-side diff)
treefd4adc6046f2b8b3d2e01b9ea415fbb9f96b3726
parent2d09f1c09a64adab3a756e5d7108a2138682a2f3 (diff)
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dualism: the duct
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-rw-r--r--fanduct.scad42
1 files changed, 39 insertions, 3 deletions
diff --git a/fanduct.scad b/fanduct.scad
index 3e2a15e..b9689c9 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -30,2 +30,6 @@ hotend_clearance = heater_clearance;
+nozzles_apart = 18; // distance between nozzles for dual hotend
+space_behind_nozzle = 15; // space behind the nozzle where we're allowed to go
+ // without the fear of hitting carriage
+
snapper_d = 8; snapper_overlap=0.2; // snip snap
@@ -34,10 +38,15 @@ smooth_f = 120;
-type="3jets"; // "3jets" ; // circular|3jets
+type="circular"; // circular|3jets
ductshape="square"; // square|round
+dual=true; // dual or single
+to_midduct = fanduct_ir+fanduct_shell+fanduct_w/2;
+dual_spots = [ [+space_behind_nozzle, -(to_midduct+nozzles_apart/2)],
+ [- to_midduct, -(to_midduct+nozzles_apart/2)],
+ [- to_midduct, 0] ];
-module fanduct(type=type,ductshape=ductshape) {
-
+module fanduct(type=type,ductshape=ductshape,dual=dual) {
// *** duct is all around!
module duct(what) {
+ module single() {
if(what=="in") {
@@ -71,2 +80,29 @@ module fanduct(type=type,ductshape=ductshape) {
}
+ module dual() {
+ 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();
+ }
+ }
+ if(what=="in") {
+ hulls() cylinder(d=fanduct_w+2*fanduct_shell,h=fanduct_h+2*fanduct_shell);
+ }else if(what=="out") {
+ sh = fanduct_w; sv = fanduct_h;
+ smax = max(sh,sv);
+ translate([0,0,fanduct_shell]) hulls() {
+ cylinder(d=fanduct_w,h=fanduct_h/2);
+ translate([0,0,fanduct_h/2])
+ scale([sh/smax,sh/smax,sv/smax])
+ intersection() {
+ sphere(d=smax,$fn=36);
+ translate([0,0,-1])
+ cylinder(d=smax+2,h=smax+2,$fn=36);
+ }
+ }
+ }
+ }
+
+ if(dual) dual();
+ else single();
+ }