| -rw-r--r-- | fanduct.scad | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fanduct.scad b/fanduct.scad index 49ab4c2..302ea07 100644 --- a/fanduct.scad +++ b/fanduct.scad @@ -1,361 +1,361 @@ use <snapper.scad>; extrusion_width=.5; layer_height=.2; // print parameters epsilon=.005; // for finer cuts function hypothenuse(a,b) = sqrt(pow(a,2)+pow(b,2)); silicone_shell = 2; heater_clearance = max( hypothenuse(16/2 +silicone_shell, 20-4.5 +silicone_shell), // E3D v6 hypothenuse(11.5-4.5 +silicone_shell, 15.5 +silicone_shell) // E3D volcano ); 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 = heater_clearance+5; // inner radius jet_angle = 60-2; // angular width of the jet inlet_w = 12.5; // inlet width inlet_h = 17; // inlet height inlet_short_l = 7; // inlet length of protrusion (or depth of intrusion:)) inlet_away = 15; // how far away inlet is inlet_long_l = inlet_short_l+inlet_h; hotend_clearance = heater_clearance; nozzles_apart = 18; // distance between nozzles for dual hotend space_behind_nozzle = 10; // space behind the nozzle where we're allowed to go // without the fear of hitting carriage snapper_d = 8; snapper_overlap=0.2; // snip snap smooth_f = 120; type="circular"; // circular|3jets ductshape="square"; // square|round dual=false; // dual or single to_midduct = fanduct_ir+fanduct_shell+fanduct_w/2; dual_spots = [ [+space_behind_nozzle, -(to_midduct+nozzles_apart/2)], [- to_midduct, -(to_midduct+nozzles_apart/2)], [- to_midduct, 0] ]; module fanduct(type=type,ductshape=ductshape,dual=dual) { // *** duct is all around! module duct(what) { module single() { if(what=="in") { sh = fanduct_w+2*fanduct_shell; sv = fanduct_h+2*fanduct_shell; smax = max(sh,sv); rotate_extrude($fn=smooth_f) if(ductshape=="round") translate([sh/2+fanduct_ir,sv/2]) scale([sh/smax,sv/smax]) circle(d=smax,$fn=4*smax); else if(ductshape=="square") translate([fanduct_ir,0]) square([sh,sv]); }else if(what=="out") { sh = fanduct_w; sv = fanduct_h; smax = max(sh,sv); rotate_extrude($fn=smooth_f) if(ductshape=="round") translate([sh/2+fanduct_shell+fanduct_ir,sv/2+fanduct_shell]) scale([sh/smax,sv/smax]) circle(d=smax,$fn=4*smax); else if(ductshape=="square") translate([fanduct_ir+fanduct_shell,fanduct_shell]) union() { square([sh,sv/2]); translate([sh/2,sv/2]) scale([sh/smax,sv/smax]) circle(d=smax,$fn=36); } } } module dual() { module hulls(spots=dual_spots) { for(my=[0,1]) mirror([0,my,0]) for(pn=[0:1:len(spots)-2]) hull() { for(p=[spots[pn],spots[pn+1]]) translate(p) children(); } } if(what=="in") { hulls() cylinder(d=fanduct_w+2*fanduct_shell,h=fanduct_h+2*fanduct_shell); }else if(what=="out") { sh = fanduct_w; sv = fanduct_h; smax = max(sh,sv); translate([0,0,fanduct_shell]) hulls() { cylinder(d=fanduct_w,h=fanduct_h/2); translate([0,0,fanduct_h/2]) scale([sh/smax,sh/smax,sv/smax]) intersection() { sphere(d=smax,$fn=36); translate([0,0,-1]) cylinder(d=smax+2,h=smax+2,$fn=36); } } } } if(dual) dual(); else single(); } // *** bumps for easier position adjustments in line with hotend module marks(what) { if(what=="in") { for(y=[-1,1]) translate([0,dual?y*nozzles_apart/2:0,0]) hull() for(z=[0,-fanduct_shell-fanduct_h/2]) translate([0,y*(fanduct_ir+fanduct_shell+fanduct_w/2),fanduct_shell*2+fanduct_h+z]) rotate([90,0,0]) { cylinder(r=fanduct_shell,h=fanduct_w,center=true,$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,dual?nozzles_apart/2:0]]); 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($fn=smooth_f) polygon([ [0,-fanduct_elevation+fanduct_blowtarget+epsilon], [fanduct_ir+fanduct_shell,fanduct_shell+fanduct_h/2], [fanduct_ir+fanduct_shell+fanduct_w/2,0], [0,-fanduct_elevation+fanduct_blowtarget-epsilon]]); translate([0,0,-1]) cylinder(r=hotend_clearance,h=fanduct_h+2*fanduct_shell+2,$fn=smooth_f); mirror([0,0,1]) translate([0,0,-epsilon]) cylinder(r=fanduct_ir+2*fanduct_shell+fanduct_w+1,h=fanduct_elevation+.1+2); } }else if(what=="out") { rotate_extrude($fn=smooth_f) polygon([ [0,-fanduct_elevation+fanduct_blowtarget+epsilon], [fanduct_ir+fanduct_shell+1,fanduct_h/2], [fanduct_ir+fanduct_w/2+fanduct_shell+1,fanduct_shell], [0,-fanduct_elevation+fanduct_blowtarget-epsilon]]); }else if(what=="airguides") { inr = fanduct_ir+fanduct_shell; our = inr+fanduct_w; union() { for(my=[0,1]) mirror([0,my,0]) { guideline([ [-our,inlet_w/6], [-inr*sin(60),inr*cos(60)] ]); a0=30; as=15; a1=180; for(a=[a0+as:as:a1]) { f = as/(a1-a+as); rotate([0,0,a]) guideline([[-inr-fanduct_w*f,0]]); } guideline([ [-our+fanduct_w*cos(30)*3/4,fanduct_w*sin(30)*3/4], [-inr*cos(10),inr*sin(10)] ]); } }/*union*/ }/*airguides*/ } module jets(what) { od = fanduct_h*2/3+fanduct_shell; md = fanduct_ir+fanduct_shell+fanduct_w/2; jww = 2*md*sin(jet_angle/2); difference() { for(a=[0:120:359]) rotate([0,0,a]) { if(what=="in") { hull() { intersection() { translate([md-fanduct_w/2,-jww/2,0]) cube(size=[fanduct_shell+fanduct_w/2,jww,od]); duct(what=what); } translate([0,0,-fanduct_elevation]) sphere(r=.5); } }else if(what=="out") { hull() { intersection() { translate([md-fanduct_w/2,-jww/2+fanduct_shell,fanduct_shell]) cube(size=[fanduct_w/2,jww-2*fanduct_shell,od-2*fanduct_shell]); duct(what=what); } translate([0,0,-fanduct_elevation]) sphere(r=.2); } } } if(what=="in") { translate([0,0,-fanduct_elevation-2+epsilon]) cylinder(r=fanduct_ir+fanduct_shell*2+fanduct_w+1,h=fanduct_elevation+2); translate([0,0,-hotend_clearance]) rotate([0,0,30]) cylinder(r1=hotend_clearance*2,r2=0,h=hotend_clearance*2,$fn=6); } } } module dual(what=what) { module hulls(spots=dual_spots) { for(my=[0,1]) mirror([0,my,0]) for(pn=[0:1:len(spots)-2]) hull() { for(p=[spots[pn],spots[pn+1]]) translate(p) children(0); children([1:$children-1]); } } if(what=="in") { cfn= 4; // clearance cutout $fn difference() { hulls() { cylinder(d=fanduct_w+2*fanduct_shell,h=2*fanduct_shell+fanduct_h/2); translate([0,-nozzles_apart/2,-fanduct_elevation-fanduct_blowtarget]) sphere(d=.1); } translate([0,0,epsilon]) hull() for(my=[0:1]) mirror([0,my,0]) for(s=dual_spots) translate(s) mirror([0,0,1]) cylinder(d=fanduct_w+2*fanduct_shell+2,h=fanduct_elevation-fanduct_blowtarget+1); for(s=[-1,1]) translate([0,s*nozzles_apart/2,-1]) rotate([0,0,180/cfn]) cylinder(r=hotend_clearance/cos(180/cfn),h=fanduct_h+2*fanduct_shell+2,$fn=cfn); } }else if(what=="out") { hulls() { translate([0,0,fanduct_shell]) cylinder(d=fanduct_w,h=fanduct_h/2-fanduct_shell/2); translate([0,-nozzles_apart/2,-fanduct_elevation+fanduct_blowtarget]) sphere(d=.1); } }else if(what=="airguides") { far = fanduct_ir+fanduct_shell+fanduct_w; near = fanduct_ir; union() { for(my=[0,1]) mirror([0,my,0]) { guideline([ [-far ,0], [0,0] ]); guideline([ [-far ,inlet_w/2/4], [-near ,nozzles_apart/2] ]); guideline([ [-near-fanduct_w/3,nozzles_apart/2+near+fanduct_w/3] ]); guideline([ [0 ,nozzles_apart/2+near+fanduct_w/2] ]); } } } } if(dual) dual(what); else if(type=="circular") circus(what); else if(type=="3jets") jets(what); } // *** air intake module intake(what) { module placeit() { translate([-fanduct_ir-2*fanduct_shell-fanduct_w-inlet_away,0,fanduct_shell]) rotate([0,-90,0]) children(); } if(what=="in") { placeit() translate([0,-inlet_w/2,0]) { difference() { cube(size=[inlet_h,inlet_w,inlet_long_l+fanduct_shell]); translate([inlet_h+fanduct_shell,0,inlet_long_l+fanduct_shell]) rotate([-90,0,0]) translate([0,0,-1]) cylinder(r=inlet_h,h=inlet_w+2*fanduct_shell+2,$fn=inlet_h*4); } // supports for(i=[-1,0,1]) translate([-fanduct_shell, (i+1)*(inlet_w-extrusion_width)/2, -inlet_away-fanduct_w/2]) - cube(size=[fanduct_shell, + cube(size=[fanduct_shell+1, extrusion_width, inlet_long_l+fanduct_shell+inlet_away+fanduct_w/2]); } hull() { placeit() translate([-fanduct_shell,-inlet_w/2-fanduct_shell,0]) cube(size=[inlet_h+2*fanduct_shell,inlet_w+2*fanduct_shell,fanduct_shell]); translate([-fanduct_ir-fanduct_shell-fanduct_w/2,0,0]) translate([0,-inlet_w/2-fanduct_shell/2,0]) cube(size=[1,inlet_w+fanduct_shell,fanduct_shell*2+fanduct_h]); } }else if(what=="out") { placeit() translate([fanduct_shell,-inlet_w/2+fanduct_shell,0]) cube(size=[inlet_h-2*fanduct_shell,inlet_w-2*fanduct_shell,inlet_long_l+fanduct_shell+1]); hull() { placeit() translate([fanduct_shell,-inlet_w/2+fanduct_shell,0]) cube(size=[inlet_h-2*fanduct_shell,inlet_w-2*fanduct_shell,fanduct_shell]); translate([-fanduct_ir-fanduct_shell-fanduct_w/2,0,fanduct_shell]) translate([0,-inlet_w/2+fanduct_shell,0]) cube(size=[1,inlet_w-2*fanduct_shell,fanduct_h]); } } } // *** DUCT TAILS!!! WOO-OO! (every day they're out there making duct tails…) module tails(what) { if(dual) { // XXX: not sure if it will ever be }else{ if(what=="in") { for(mx=[0,1]) mirror([mx,0,0]) translate([fanduct_ir+fanduct_shell+fanduct_w/2,0,fanduct_shell+fanduct_h/2]) rotate([90,0,90]) translate([0,0,-snapper_d/2]) snapper(d=snapper_d,o=snapper_overlap,side=0,l=fanduct_h*3/2+fanduct_shell); } } } module parts(what) { union() { duct(what); marks(what); output(what); intake(what); tails(what); } } difference() { parts("in"); parts("out"); } intersection() { union() { output("airguides"); sphere(d=epsilon); } union() { duct("in"); output("in"); intake("in"); } } } view="*"; // hcut|vcut|* hinfinity=4*(fanduct_ir+fanduct_shell*2+fanduct_w+inlet_away); vinfinity=2*(fanduct_shell*2+fanduct_h+inlet_h); if(view=="hcut") { difference() { fanduct(); translate([-hinfinity/2,-hinfinity/2,fanduct_shell+fanduct_h/2]) cube(size=[hinfinity,hinfinity,vinfinity]); } }else if(view=="vcut") { difference() { fanduct(); translate([-hinfinity/2,0,-vinfinity/2]) cube(size=[hinfinity,hinfinity,vinfinity]); } }else fanduct(); /* vim:set sw=1 ai: */ |