1 files changed, 4 insertions, 2 deletions

diff --git a/fanduct.scad b/fanduct.scad
index efc6a19..b1c9bd8 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -325,67 +325,69 @@ module fanduct(type=type,ductshape=ductshape,dual=dual) {
   }
 
   module dual_jets(what=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(my=[0,1]) mirror([0,my,0])
     translate([0,nozzles_apart/2,0])
     for(a=[45,135]) 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]);
        rotate([0,0,-a]) translate([0,-nozzles_apart/2,0]) duct(what=what);
       } // intersection
       translate([0,0,-fanduct_elevation]) sphere(r=.5);
      } // hull
     }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]);
        rotate([0,0,-a]) translate([0,-nozzles_apart/2,0]) duct(what=what);
       } // intersection
       translate([0,0,-fanduct_elevation]) sphere(r=.5);
      } // hull
     } // what=="out"
     if(what=="in") {
      translate([0,0,-fanduct_elevation/2-1+epsilon])
      cube(size=[2*(fanduct_ir+2*fanduct_shell+fanduct_w+1),nozzles_apart+2*(fanduct_ir+2*fanduct_shell+fanduct_w+1),fanduct_elevation+2],center=true);
+     cfn=4;
+     hc = hotend_clearance/cos(180/cfn);
      for(my=[0,1]) mirror([0,my,0])
-      translate([0,nozzles_apart/2,-hotend_clearance])
-      cylinder(r1=hotend_clearance*2,r2=0,h=hotend_clearance*2,$fn=4);
+      translate([0,nozzles_apart/2,-hc])
+      cylinder(r1=hc*2,r2=0,h=hc*2,$fn=cfn);
     }
    } // difference
   }
 
   module dual_simple(what=what) {
    for(my=[0:1]) mirror([0,my,0]) if(what=="in") {
     difference() {
      hull() {
       translate([0,nozzles_apart/2+fanduct_ir+fanduct_shell+fanduct_w/2,0])
       cylinder(d=fanduct_w+2*fanduct_shell,h=fanduct_h*2/3+2*fanduct_shell);
       translate([0,nozzles_apart/2,-fanduct_elevation+fanduct_blowtarget])
       rotate([0,90,0]) cylinder(r=.5,h=fanduct_w*2,center=true);
      }
      rr = 2*(fanduct_ir+fanduct_shell*2+fanduct_w+2);
      translate([-rr/2,0,0]) mirror([0,0,1]) cube(size=[rr,rr,rr]);
     }
    }else if(what=="out") {
     hull() {
      translate([0,nozzles_apart/2+fanduct_ir+fanduct_shell+fanduct_w/2,fanduct_shell])
      cylinder(d=fanduct_w,h=fanduct_h*2/3);
      translate([0,nozzles_apart/2,-fanduct_elevation+fanduct_blowtarget])
      rotate([0,90,0]) cylinder(d=.5,h=fanduct_w*2,center=true);
     }
    }
   }
 
   if(dual) {
    if(type=="simple") dual_simple(what);
    else if(type=="jets") dual_jets(what);
    else dual(what);
   }else if(type=="circular") circus(what);
   else if(type=="jets") jets(what);