https://old.hacdc.org/index.php?action=history&feed=atom&title=Exhaust_nozzle 2026-05-07T13:21:49Z Revision history for this page on the wiki MediaWiki 1.39.3 https://old.hacdc.org/index.php?title=Exhaust_nozzle&diff=13219&oldid=prev 2017-04-21T03:13:30Z

<p>page created</p> <p><b>New page</b></p><div>This is the exhaust nozzle to transition from the header on the back panel of the chassis to the 4 inch flexible metal exhaust duct which goes to the exhaust fan.<br /> <br /> &lt;nowiki&gt;<br /> //James Sullivan<br /> //exhaust nozzle for laser cutter to connect to 4&quot; exhaust hose<br /> //dimensions in millimeters<br /> //parametric version<br /> //4-20-17<br /> //OpenSCAD version 2015.03-1 <br /> $fn=80;<br /> nid=60; //nozzle inner diameter<br /> nod=80; //nozzle outer diameter<br /> mod=100; //maximum outer diameter<br /> sh=30; //step height<br /> sw=5; //step width<br /> oah=50; //over-all height<br /> tlw=3; //top ledge width<br /> bcd=46.8*2; //bolt circle diameter<br /> bhd=3.6; //bolt hole diameter<br /> fw=12; //foot width<br /> fh=15; //foot height<br /> fod=108; //foot outside dimension, from outside edge to outside edge<br /> fid=(nid+nod)/2;//foot inside dimension, from inside edge to inside edge<br /> <br /> difference(){ //nozzle<br /> rotate_extrude (angle=360,convexity=4) {polygon(points=[[nid/2,0],[nod/2,0],[mod/2,sh],[mod/2-sw,sh],[mod/2-sw,oah],[mod/2-sw-tlw,oah]]);}; //nozzle itself<br /> for (angle=[0:90:270]){ //screw access cuts<br /> rotate([0,0,angle]) translate([bcd/2,0,-5]) rotate([0,6,0]) cylinder(d=bhd*3.5,h=oah+10);<br /> }<br /> }<br /> module foot(){<br /> difference(){<br /> translate([fid/2,-fw/2,0]) cube([(fod-fid)/2,fw,fh]); //foot<br /> translate([bcd/2,0,-5]) cylinder(d=bhd,h=25); //bolt hole<br /> }<br /> }<br /> for (angle=[0:90:270]){<br /> rotate([0,0,angle]) foot();<br /> }<br /> &lt;/nowiki&gt;</div>

James