| -rw-r--r-- | fanduct.scad | 9 |
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 @@ -1,22 +1,23 @@ use <snapper.scad>; extrusion_width=.5; layer_height=.2; // print parameters epsilon=.005; // for finer cuts heater_w = 16; // heatblock width 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 fanduct_ir = sqrt(pow(heater_w/2,2)+pow(heater_l-nozzle_offset,2))+5; // inner radius jet_angle = 60; // angular width of the jet inlet_w = 12.5; // inlet width inlet_h = 17; // inlet height inlet_l = 7; // inlet length of protrusion (or depth of intrusion:)) inlet_away = 15; // how far away inlet is @@ -72,41 +73,41 @@ module fanduct(type=type) { 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], + [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,$fn=smooth_f); mirror([0,0,1]) translate([0,0,-epsilon]) cylinder(r=fanduct_ir+fanduct_shell+1,h=fanduct_elevation+.1+2); } }else if(what=="out") { rotate_extrude($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() { for(my=[0,1]) mirror([0,my,0]) { guideline([ [-our,inlet_w/6], [-inr*sin(60),inr*cos(60)] ]); a0=30; as=15; a1=180; for(a=[a0+as:as:a1]) { f = as/(a1-a+as); rotate([0,0,a]) guideline([[-inr-fanduct_w*f,0]]); |