deeper marks going halfway down

1 files changed, 8 insertions, 6 deletions

diff --git a/fanduct.scad b/fanduct.scad
index 235c079..e16c5ae 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -30,54 +30,56 @@ type="3jets"; // "3jets" ; // circular|3jets
 
 
 module fanduct(type=type) {
 
          //     ***duct is all around!
  module duct(what) {
   if(what=="in") {
    rotate_extrude($fn=smooth_f)
    translate([fanduct_ir,0])
    square([fanduct_w+2*fanduct_shell,fanduct_h+2*fanduct_shell]);
   }else if(what=="out") {
    rotate_extrude($fn=smooth_f)
    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]) translate([0,y*(fanduct_ir+fanduct_shell+fanduct_w/2),fanduct_shell*2+fanduct_h])
-   rotate([90,0,0]) {
-    cylinder(r=fanduct_shell,h=fanduct_w,center=true,$fn=30);
-    for(z=[-1,1]) translate([0,0,z*fanduct_w/2])
-     sphere(r=fanduct_shell,$fn=30);
-   }
+   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,$fn=30);
+      for(z=[-1,1]) translate([0,0,z*fanduct_w/2])
+       sphere(r=fanduct_shell,$fn=30);
+     }
   }
  }
 
          //     ***output
  module output(what,type=type) {
   module guideline(xyxy) {
    module pin(xy) {
     translate([xy[0],xy[1],0])
     cylinder(d=2*extrusion_width,h=2*fanduct_shell+inlet_h,$fn=6);
    }
    xyxyxy=concat(xyxy,[[0,0]]);
    for(i=[0:1:len(xyxyxy)-2])
     hull() for(j=[i,i+1]) pin(xyxyxy[j]);
   }
 
   module circus(what) {
    if(what=="in") {
     difference() {
      rotate_extrude($fn=smooth_f)
       polygon([
        [0,-fanduct_elevation],
        [fanduct_ir+fanduct_shell,fanduct_shell+fanduct_h/2],
        [fanduct_ir+fanduct_shell,0],
        [0,-fanduct_elevation-.1]]);