X carriage WIP

carriage with mount

X Carriage/X Carriage.scad

@@ -15,7 +15,7 @@ module base() {
     difference() {
         union() {
             block_with_fillet(width, depth, thickness, 10);
-            cube([width, 10, thickness]);
+            mount();
         }
         big_holes();
         small_holes();
@@ -61,4 +61,44 @@ module block_with_fillet(width, depth, height, fillet) {
         translate([fillet, fillet, 0])
             cylinder(r = fillet, h = height / 2);
     }
+}
+
+module mount() {
+    translate([(width - 30) / 2, 0]) {
+        //        cube([30,thickness,30]);
+
+        rotate([90, 0, 0]) {
+            difference() {
+                union() {
+                    block_with_fillet(30, 30, thickness, 10);
+                    cube([30, 10, thickness]);
+                }
+
+                union() {
+                    translate([2, 20, 10])
+                        rotate([180, 0, 0])
+                            screw_mount(length = 10, nut_size = 6, screw_size = 3, nut = "hexagon");
+
+                    translate([25, 20, 10])
+                        rotate([180, 0, 0])
+                            screw_mount(length = 10, nut_size = 6, screw_size = 3, nut = "hexagon");
+                }
+            }
+        }
+
+    }
+}
+
+module screw_mount(length, nut_size, screw_size, nut = "none") {
+    translate([screw_size / 2, screw_size / 2, 0]) {
+        cylinder(d = screw_size + 3, h = screw_size);
+        cylinder(d = screw_size, h = length);
+        if (nut == "hexagon") {
+            translate([0, 0, length - 3])
+                cylinder(d = nut_size, h = 3, $fn = 6);
+        } else if (nut == "square") {
+            translate([- nut_size / 2, - nut_size / 2, length - 3])
+                cube([nut_size, nut_size, 3]);
+        }
+    }
 }