added own OpenScad models

openscad/own/parametric 90 deg fan mount/parametric fan mount.scad

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+// fully parametric 90° fan mount 
+// by zeus - zeus@ctdo.de - CC-BY-NC-4.0
+// -> https://www.thingiverse.com/zeus
+// -> https://github.com/zeus86
+// 2014-08-14
+//
+// important: due to the fact that openscad calculates variables at compile time and not at runtime, you should take care to set "fan_size" AND "hole_dist" according to the table; otherwise your holes may be placed out of the model.
+// some notes on fan-dimensions:
+// 1) all values in mm!
+// 2) i don't own specimen of all existing fan-sizes. if you are missing a special size for a fan you have let me know, then i will list it here too. -> email me at zeus@ctdo.de
+// 3) fan screw holes are usually 4.5mm in diameter (60mm, 80mm, 120mm, 140mm,...). 40mm fans have 3.5mm holes.
+// 4) the center-to-center-distance of the mounting holes is as following:
+//		 25mm fan: ?    mm
+//		 30mm fan: ?    mm
+//		 40mm fan: 32   mm
+//		 60mm fan: 50   mm
+//		 80mm fan: 71.5 mm
+//		 92mm fan: 82.5 mm
+//		120mm fan: 105  mm
+//		135mm fan: 120  mm
+//		140mm fan: 125  mm
+//		200mm fan: ?    mm (attention, various versions! some don't have a squared outside-frame. don't use the adapter on these ones.)
+//		note that these distances are normaly given with a tolerance of up to +- 0.5mm.
+// 5) some fans are very thick. better use countersink screws for surface mount then.
+//
+//
+//
+//
+//
+//
+//
+//
+//---------------------------------------
+//---------------------------------------
+//
+//some basic variables to adjust:
+fan_size		= 80;		// fan side-length in mm
+hole_dist	= 71.5;	// fan's center-to-center hole distance. see table above
+material_t	= 4;		// thickness of the "walls" of the mount
+f_mnt_holes_dia = 4.75;	// diameter for fan holes, better add 0.3 or something to the fan-holes
+s_mnt_holes_dia = 4.5;	// hole diameter of surface mount holes
+extra_height = 3;		// extra height above surface
+extra_depth = 3;		// extra depth of the surface flange
+extra_width	= 3;		// extra width of the mount over the fan; improves stability of the fan mounting holes. set to '0' if needed
+countersunk_surface = 1;		// set to 1 if you want to use countersunk screws for the surface mount holes. will generate sunks on the screw holes
+countersunk_fan = 0;		// same as above, only for the fan mount holes
+//
+//
+//
+//---------------------------------------
+//---------------------------------------
+// better not adjust these ones ;-)  :
+mount_width = fan_size+extra_width;
+wheel_d = fan_size*0.98;
+l_base = mount_width;
+w_base = fan_size/4+extra_depth;
+t_base = material_t;
+l_wall = mount_width;
+w_wall = material_t;
+t_wall = fan_size/4+material_t+extra_height;
+
+
+module mountscrewhole(){
+if (countersunk_surface == 1) {
+difference() {
+cylinder(h = material_t+0.2, r1 = 0, r2 = s_mnt_holes_dia*0.75, $fn=30);
+}
+cylinder(r = s_mnt_holes_dia/2,material_t+0.2, $fn=30); }
+else {
+cylinder(r = s_mnt_holes_dia/2,material_t+0.2, $fn=30); }
+}
+
+module fanscrewhole() {
+if (countersunk_fan == 1) {
+difference() {
+cylinder(h = material_t+0.2, r1 = 0, r2 = f_mnt_holes_dia*0.75, $fn=30);
+}
+cylinder(r = f_mnt_holes_dia/2,w_wall+0.2, $fn=30);}
+else {
+cylinder(r = f_mnt_holes_dia/2,w_wall+0.2, $fn=30);}
+}
+
+module base() {
+	difference() {
+		translate ([-l_base/2, -w_base/2, 0]) {
+			cube([l_base, w_base, t_base]); }
+		translate ([-l_base/3,0,-0.1]){
+			mountscrewhole(); } //surface mounting hole
+		translate ([l_base/3,0,-0.1]) {
+			mountscrewhole(); } //surface mounting hole	
+	}
+}
+
+module wall(){
+	translate ([-l_wall/2, w_base/2, -0]){
+	difference(){
+		cube([l_wall, w_wall, t_wall+material_t]);
+			rotate (a =90, v = [1,0,0]){
+				translate([mount_width/2-hole_dist/2,f_mnt_holes_dia/2+material_t+extra_height,-material_t-0.1]){
+					fanscrewhole(); //fan mounting hole
+							}
+				translate([mount_width/2+hole_dist/2,f_mnt_holes_dia/2+material_t+extra_height,-material_t-0.1]){
+					fanscrewhole(); //fan mounting hole
+				}
+			}
+		}
+	}
+}
+
+module carving()	{
+		translate ([0,w_base/2+material_t+0.1,wheel_d/2+material_t+extra_height]){
+ 		rotate (a =90, v = [1,0,0])	{
+			cylinder (r = wheel_d/2, h = material_t+0.2, $fn=50);
+			translate ([-mount_width,-wheel_d/2*0.5,0])		{
+				cube ([mount_width*2,wheel_d/2,material_t+0.2]);}
+															}
+											}
+						}
+
+
+module fan_mount()	{
+base();
+difference()	{
+	wall();
+	carving();	}
+							}
+
+fan_mount();