diff --git a/coolingFanMount.scad b/coolingFanMount.scad
new file mode 100644
index 0000000..7b3c216
--- /dev/null
+++ b/coolingFanMount.scad
@@ -0,0 +1,67 @@
+/* mount options */
+wt = 5; // wall thickness (min 5mm for m2 inserts)
+tb = 40;
+bpt = 7;
+
+
+/* fan size */
+lf  = 40; // length
+tf  = 10; // thickness
+lhf = 34.8; // distance mounting holes
+lof = 28; // length of outlet
+wof = 8; // width of outlet
+rc = 2; // radius corners
+
+
+t= tb-bpt-tf;
+$fn= 100;
+
+module through(l=7, lh=3.3, lt=1, lb=1){
+    union(){
+        translate([0,0,l-lh])cylinder(h=lh+lt, d=5.6);
+        translate([0,0,-lb])cylinder(h=l+lh+lb, d=3.5);
+    }
+}
+
+module m3 (h=8, lt=1){
+    //translate([0,0,-lt])cylinder(h, d=2.5); // tapped M3
+    translate([0,0,-lt])cylinder(h, d=4); // rutex insert
+}
+
+module m2 (h=8, lt=1){
+    translate([0,0,-lt])cylinder(h, d=1.5); // tapped M3
+    //translate([0,0,-lt])cylinder(h, d=3.2); // rutex insert
+}
+
+module mount(){
+    translate([4,4,-12])difference(){
+        hull(){
+            translate([0,0,6])cylinder(h=6, d=8);
+            translate([4,-4,0])cube([0.01,8,12]);
+        }
+        translate([0,0,12])mirror([0,0,1])through(l=10,lb=1,lt=1,lh=7);
+    }
+}
+
+difference(){
+    union(){
+        hull(){
+            for(x=[rc, lf-rc]){
+                for(y=[rc, lf-rc]){
+                    translate([x,y])cylinder(h=wt,r=rc);
+                }
+            }
+        }
+        translate([lf,5,wt+8])rotate([0,90,0])mount();
+        translate([lf,lf-5-8,wt+8])rotate([0,90,0])mount();
+    }
+
+    for(x=[(lf-lhf)/2, (lf-lhf)/2+lhf]){
+        for(y=[(lf-lhf)/2, (lf-lhf)/2+lhf]){
+            translate([x,y])m2();
+        }
+    }
+
+    translate([8, 0,wt/2])rotate([-90,0,0])m2();
+    translate([lf-8, 0,wt/2])rotate([-90,0,0])m2();
+}