more designs

gate_mount.scad

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+hole_dia = 14;
+hole_depth = 29;
+
+wall_thickness = 3;
+
+screw_hole_dia = 4;
+screw_hole_chamfer = 2;
+
+module slot(width, height) {
+    radius = width / 2;
+    squ_height = height-2*radius;
+
+    union(){
+        square(size=[width, squ_height], center=true);
+        translate([0,squ_height/2,0])
+        circle(r=radius);
+        translate([0,-squ_height/2,0])
+        circle(r=radius);
+    }
+}
+
+module sector(radius, angles, fn = 24) {
+    r = radius / cos(180 / fn);
+    step = -360 / fn;
+
+    points = concat([[0, 0]],
+        [for(a = [angles[0] : step : angles[1] - 360]) 
+            [r * cos(a), r * sin(a)]
+        ],
+        [[r * cos(angles[1]), r * sin(angles[1])]]
+    );
+
+    difference() {
+        circle(radius, $fn = fn);
+        polygon(points);
+    }
+}
+
+module holder() {
+    inner_radius = 10.5;
+    round_radius = 3;
+
+
+    minkowski() {
+        difference(){
+            circle(r=inner_radius+round_radius+0.1);
+            circle(r=inner_radius+round_radius);
+            sector(inner_radius+round_radius+2, [-30, 210]);
+        }
+        circle(r=round_radius, $fn=25);
+    }
+}
+
+module safety() {
+
+}
+
+linear_extrude(wall_thickness){
+    slot(30, 60);
+}
+
+my_offset = -13;
+
+translate([0,my_offset,wall_thickness])
+linear_extrude(wall_thickness)
+holder($fn=100);
+
+color("lavender") {
+    translate([0,my_offset,4])
+    circle(r=10);
+}