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
@@ -355,7 +355,9 @@ module fanduct(type=type,ductshape=ductshape,dual=dual) {
      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