-rw-r--r-- | fanduct.scad | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/fanduct.scad b/fanduct.scad index a843023..41048bf 100644 --- a/fanduct.scad +++ b/fanduct.scad @@ -13,59 +13,61 @@ fanduct_w = 6; // 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 hotend_clearance = 12; snapper_d = 8; snapper_overlap=0.2; // snip snap smooth_f = 120; type="3jets"; // "3jets" ; // circular|3jets module fanduct(type=type) { // *** duct is all around! module duct(what) { if(what=="in") { + sh = fanduct_w+2*fanduct_shell; sv = fanduct_h+2*fanduct_shell; + smax = max(sh,sv); rotate_extrude($fn=smooth_f) - translate([fanduct_ir,0]) - square([fanduct_w+2*fanduct_shell,fanduct_h+2*fanduct_shell]); + translate([sh/2+fanduct_ir,sv/2]) + scale([sh/smax,sv/smax]) + circle(d=smax,$fn=4*smax); }else if(what=="out") { + sh = fanduct_w; sv = fanduct_h; + smax = max(sh,sv); rotate_extrude($fn=smooth_f) - translate([fanduct_ir+fanduct_shell,fanduct_shell]) - union() { - square([fanduct_w,fanduct_h/2]); - translate([fanduct_w/2,fanduct_h-fanduct_w/2]) - rotate([0,0,90]) circle(d=fanduct_w,$fn=36); - } + translate([sh/2+fanduct_shell+fanduct_ir,sv/2+fanduct_shell]) + scale([sh/smax,sv/smax]) + circle(d=smax,$fn=4*smax); } } // *** bumps for easier position adjustments in line with hotend module marks(what) { if(what=="in") { for(y=[-1,1]) hull() for(z=[0,-fanduct_shell-fanduct_h/2]) translate([0,y*(fanduct_ir+fanduct_shell+fanduct_w/2),fanduct_shell*2+fanduct_h+z]) rotate([90,0,0]) { cylinder(r=fanduct_shell,h=fanduct_w,center=true,$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); } |