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-rw-r--r--fanduct.scad9
1 files changed, 5 insertions, 4 deletions
diff --git a/fanduct.scad b/fanduct.scad
index 7fc1ff4..f4bb705 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -8,6 +8,7 @@ heater_l = 20; // heatblock length
nozzle_offset=4.5; // nozzle offset from the edge of heatblock
fanduct_elevation = 3; // fanduct elevation above nozzle tip
+fanduct_blowtarget = -2; // what to blow at
fanduct_h = 6; // inner height of the duct
fanduct_w = 7; // inner width of the duct
fanduct_shell=1.2; // shell thickness
@@ -81,10 +82,10 @@ module fanduct(type=type) {
difference() {
rotate_extrude($fn=smooth_f)
polygon([
- [0,-fanduct_elevation],
+ [0,-fanduct_elevation+fanduct_blowtarget+epsilon],
[fanduct_ir+fanduct_shell,fanduct_shell+fanduct_h/2],
[fanduct_ir+fanduct_shell+fanduct_w/2,0],
- [0,-fanduct_elevation-.1]]);
+ [0,-fanduct_elevation+fanduct_blowtarget-epsilon]]);
translate([0,0,-1])
cylinder(r=hotend_clearance,h=fanduct_h+2*fanduct_shell+2,$fn=smooth_f);
mirror([0,0,1])
@@ -94,10 +95,10 @@ module fanduct(type=type) {
}else if(what=="out") {
rotate_extrude($fn=smooth_f)
polygon([
- [0,-fanduct_elevation],
+ [0,-fanduct_elevation+fanduct_blowtarget+epsilon],
[fanduct_ir+fanduct_shell+1,fanduct_h/2],
[fanduct_ir+fanduct_w/2+fanduct_shell+1,fanduct_shell],
- [0,-fanduct_elevation-.1]]);
+ [0,-fanduct_elevation+fanduct_blowtarget-epsilon]]);
}else if(what=="airguides") {
inr = fanduct_ir+fanduct_shell; our = inr+fanduct_w;
union() {