author | Michael Krelin <hacker@klever.net> | 2016-07-21 16:10:58 (UTC) |
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committer | Michael Krelin <hacker@klever.net> | 2016-07-21 16:10:58 (UTC) |
commit | 9cceb044d036c37c8c8703926c9c84d1d88cc2e0 (patch) (side-by-side diff) | |
tree | 99df49970a2c5b630e8f35db65ce437ae32cca93 /fanduct.scad | |
parent | c37fd834984997726d5f30b353a19a3eed3cfbd7 (diff) | |
download | fanductory-9cceb044d036c37c8c8703926c9c84d1d88cc2e0.zip fanductory-9cceb044d036c37c8c8703926c9c84d1d88cc2e0.tar.gz fanductory-9cceb044d036c37c8c8703926c9c84d1d88cc2e0.tar.bz2 |
ductshape generator
-rw-r--r-- | fanduct.scad | 42 |
1 files changed, 22 insertions, 20 deletions
diff --git a/fanduct.scad b/fanduct.scad index a17b261..ba63717 100644 --- a/fanduct.scad +++ b/fanduct.scad @@ -1,177 +1,179 @@ use <snapper.scad>; extrusion_width=.5; layer_height=.2; // print parameters epsilon=.005; // for finer cuts type="simple"; // circular|3jets ductshape="square"; // square|round dual=true; // dual or single 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 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; function hypothenuse(a,b) = sqrt(pow(a,2)+pow(b,2)); silicone_shell = 2; heater_clearance = dual ? max(20,15.5) - 4.5 + silicone_shell : 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 hotend_clearance = heater_clearance; snapper_d = 8; snapper_overlap=0.2; // snip snap draft=true; smooth_f = draft? 30 : 120; 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; + module ductshape(what,sh,sv,r) { smax = max(sh,sv); - rotate_extrude($fn=smooth_f) - if(ductshape=="round") - translate([sh/2+fanduct_ir,sv/2]) + translate([what=="in"?0:fanduct_shell,what=="in"?0:fanduct_shell]) + if(ductshape=="round") { + translate([sh/2+r,sv/2]) scale([sh/smax,sv/smax]) circle(d=smax,$fn=4*smax); - else if(ductshape=="square") - translate([fanduct_ir,0]) + }else if(ductshape=="square") { + translate([r,0]) + if(what=="in") 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() { + else if(what=="out") union() { square([sh,sv/2]); translate([sh/2,sv/2]) scale([sh/smax,sv/smax]) - circle(d=smax,$fn=36); + circle(d=smax,$fn=4*smax); + } + } } + module single() { + if(what=="in") { + sh = fanduct_w+2*fanduct_shell; sv = fanduct_h+2*fanduct_shell; + rotate_extrude($fn=smooth_f) + ductshape(what=what,sh=sh,sv=sv,r=fanduct_ir); + }else if(what=="out") { + sh = fanduct_w; sv = fanduct_h; + smax = max(sh,sv); + rotate_extrude($fn=smooth_f) + ductshape(what=what,sh=sh,sv=sv,r=fanduct_ir); } } 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); } } } } module dual_simple() { for(my=[0,1]) mirror([0,my,0]) if(what=="in") { sh = fanduct_w+2*fanduct_shell; sv = fanduct_h+2*fanduct_shell; translate([0,nozzles_apart/2,0]) intersection() { rotate_extrude($fn=smooth_f) translate([fanduct_ir,0]) square([sh,sv]); translate([-fanduct_ir-sh-1,0,-1]) cube(size=[fanduct_ir+sh+2,fanduct_ir+sh+2,sv+2]); } translate([-fanduct_ir-sh,-epsilon,0]) cube(size=[sh,nozzles_apart/2+2*epsilon,sv]); translate([0,sh/2+fanduct_ir+nozzles_apart/2,0]) cylinder(d=sh,h=sv,$fn=36); }else if(what=="out") { sh = fanduct_w; sv = fanduct_h; translate([0,nozzles_apart/2,fanduct_shell]) intersection() { rotate_extrude($fn=smooth_f) translate([fanduct_ir+fanduct_shell,0]) square([sh,sv]); translate([-fanduct_ir-2*fanduct_shell-sh-1,-1,0]) cube(size=[fanduct_ir+2*fanduct_shell+sh+2,fanduct_ir+2*fanduct_shell+sh+2,sv]); } translate([-fanduct_ir-fanduct_shell-sh,-epsilon,fanduct_shell]) cube(size=[sh,nozzles_apart/2+2*epsilon,sv]); translate([0,sh/2+fanduct_shell+fanduct_ir+nozzles_apart/2,fanduct_shell]) cylinder(d=sh,h=sv,$fn=36); } } if(dual) { if(type=="simple") dual_simple(); else 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], |