Restructered pre-import

Old Pages/Old Wiki/Exhaust_nozzle.md

@@ -0,0 +1,21 @@
+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.
+
+//James Sullivan //exhaust nozzle for laser cutter to connect to 4"
+exhaust hose //dimensions in millimeters //parametric version //4-20-17
+//OpenSCAD version 2015.03-1 \$fn=80; nid=60; //nozzle inner diameter
+nod=80; //nozzle outer diameter mod=100; //maximum outer diameter sh=30;
+//step height sw=5; //step width oah=50; //over-all height tlw=3; //top
+ledge width bcd=46.8\*2; //bolt circle diameter bhd=3.6; //bolt hole
+diameter fw=12; //foot width fh=15; //foot height fod=108; //foot
+outside dimension, from outside edge to outside edge
+fid=(nid+nod)/2;//foot inside dimension, from inside edge to inside edge
+difference(){ //nozzle rotate_extrude (angle=360,convexity=4)
+{polygon(points=\[\[nid/2,0\],\[nod/2,0\],\[mod/2,sh\],\[mod/2-sw,sh\],\[mod/2-sw,oah\],\[mod/2-sw-tlw,oah\|nid/2,0\],\[nod/2,0\],\[mod/2,sh\],\[mod/2-sw,sh\],\[mod/2-sw,oah\],\[mod/2-sw-tlw,oah\]\]);};
+//nozzle itself for (angle=\[0:90:270\]){ //screw access cuts
+rotate(\[0,0,angle\]) translate(\[bcd/2,0,-5\]) rotate(\[0,6,0\])
+cylinder(d=bhd\*3.5,h=oah+10); } } module foot(){ difference(){
+translate(\[fid/2,-fw/2,0\]) cube(\[(fod-fid)/2,fw,fh\]); //foot
+translate(\[bcd/2,0,-5\]) cylinder(d=bhd,h=25); //bolt hole } } for
+(angle=\[0:90:270\]){ rotate(\[0,0,angle\]) foot(); }