added simple fan-duct

lib/linear_bearing.scad

@@ -54,17 +54,31 @@ x_carriage_block_height = 2 * (x_carriage_block_hole_off + x_carriage_block_add)
 x_cutout_width = x_carriage_width - (2 * x_carriage_belt_block_width) - 5;
 x_cutout_length = x_rail_dist - 25;
 
-draw_x_carriage = false;
-draw_y_carriage = false;
-draw_y_carriage_idlers = true;
-draw_rail_len = 200;
-
 // y-carriage belt idlers
 idler_a_blue = [  19,               15,  5.5];
 idler_a_red  = [  19, x_rail_dist + 15, 12.5];
 idler_b_blue = [30.3, x_rail_dist + 15, 12.5];
 idler_b_red  = [30.3,               15,  5.5];
 
+e3d_v6_dist_x = 23 + 5;
+e3d_v6_dist_y = 18 + 1;
+e3d_v6_z_off = 13;
+
+e3d_clamp_width = x_cutout_width;
+e3d_clamp_width_add = 10;
+e3d_clamp_length = e3d_v6_dist_y;
+e3d_clamp_b_length = ((x_cutout_length - e3d_clamp_length) / 2) + 7;
+e3d_clamp_height = e3d_upper_small_height;
+e3d_clamp_dia_add = 0.2;
+e3d_clamp_cut = 0.2; // x2
+e3d_clamp_hole_off = 4;
+e3d_hole_dia = 3.2;
+
+draw_x_carriage = true;
+draw_y_carriage = false;
+draw_y_carriage_idlers = true;
+draw_rail_len = 200;
+
 module lm8uu() {
     $fn = 15;
     difference() {
@@ -307,6 +321,8 @@ module x_carriage() {
             }
         }
         
+        /* mounting for hotend / tool */
+        
         // left mounting screw
         translate([5.5, x_carriage_length / 2, -1])
             cylinder(d = e3d_hole_dia, h = x_carriage_wall + 12);
@@ -321,11 +337,11 @@ module x_carriage() {
         translate([x_carriage_width / 2, x_carriage_length - 19, -1])
             cylinder(d = e3d_hole_dia, h = x_carriage_wall + 12);
     }
-        
-    e3d_v6_dist_x = 23 + 5;
-    e3d_v6_dist_y = 18 + 1;
-    e3d_v6_z_off = 13;
     
+    e3d_v6_triple_mount();
+}
+
+module e3d_v6_triple_mount() {
     translate([x_carriage_width / 2, x_carriage_length / 2, -e3d_v6_height + x_carriage_wall + e3d_v6_z_off]) {
         
         color("red")
@@ -342,16 +358,6 @@ module x_carriage() {
             e3d_v6();
     }
     
-    e3d_clamp_width = x_cutout_width;
-    e3d_clamp_width_add = 10;
-    e3d_clamp_length = e3d_v6_dist_y;
-    e3d_clamp_b_length = ((x_cutout_length - e3d_clamp_length) / 2) + 7;
-    e3d_clamp_height = e3d_upper_small_height;
-    e3d_clamp_dia_add = 0.2;
-    e3d_clamp_cut = 0.2; // x2
-    e3d_clamp_hole_off = 4;
-    e3d_hole_dia = 3.2;
-    
     echo(m3_screw_len=e3d_clamp_length + (2 * e3d_clamp_b_length));
     
     // hotend clamp center piece
@@ -374,6 +380,12 @@ module x_carriage() {
                 cube([e3d_clamp_width, e3d_clamp_b_length - e3d_clamp_cut, e3d_clamp_height]);
         }
         
+        // cable holes
+        translate([9.5, 6, -1])
+            cylinder(d = 7, h = e3d_clamp_height + 2);
+        translate([e3d_clamp_width - 9.5, 6, -1])
+            cylinder(d = 7, h = e3d_clamp_height + 2);
+        
         // left clamping screw
         translate([e3d_clamp_hole_off, -e3d_clamp_b_length - 1, e3d_clamp_height / 2])
             rotate([-90, 0, 0])
@@ -410,14 +422,93 @@ module x_carriage() {
             cylinder(d = e3d_upper_small_dia + e3d_clamp_dia_add, h = e3d_clamp_height + 2);
     }
     
-    // hotend cooling fan
-    color("grey")
-    %translate([x_carriage_width + 5, (x_carriage_length - 40) / 2, -40])
+    fan_mount_wall = 5;
+    fan_mount_inset = 5;
+    fan_width = 40;
+    fan_height = 20;
+    
     difference() {
-        cube([20, 40, 40]);
-        translate([-1, 20, 20])
-            rotate([0, 90, 0])
-            cylinder(d = 35, h = 22);
+        union() {
+            translate([x_carriage_width, (x_carriage_length - fan_width) / 2, -fan_width]) {
+                // hotend cooling fan
+                color("grey")
+                %translate([fan_mount_wall, 0, 0])
+                difference() {
+                    cube([fan_height, fan_width, fan_width]);
+                    translate([-1, fan_width / 2, fan_width / 2])
+                        rotate([0, 90, 0])
+                        cylinder(d = fan_width - 5, h = fan_height + 2);
+                }
+                
+                // fan mount
+                color("orange")
+                difference() {
+                    cube([fan_mount_wall, fan_width, fan_width + x_carriage_wall]);
+                    
+                    translate([-1, fan_mount_inset, fan_mount_inset])
+                        cube([fan_mount_wall + 2, fan_width - (fan_mount_inset * 2), fan_width - (fan_mount_inset * 2)]);
+                }
+            }
+            
+            // fan duct
+            color("orange")
+            translate([x_carriage_width, (x_carriage_length - fan_width) / 2, 0])
+            difference() {
+                fan_duct(40, (fan_width - 40) / 2);
+                fan_duct(37, (fan_width - 37) / 2);
+            }
+        }
+        
+        // TODO mounting holes
+        // TODO fan holes
+    }
+}
+
+module fan_duct(size, off) {
+    difference() {
+        translate([0, off, -size - off]) {
+            hull() {
+                cube([1, size, size]);
+                translate([-10, 0, 10])
+                    cube([1, size, size - 11]);
+            }
+            hull() {
+                translate([-10, 0, 10])
+                    cube([1, size, size - 11]);
+                translate([-15, -6, 17])
+                    cube([1, size + 12, size - 18]);
+            }
+            hull() {
+                translate([-15, -6, 17])
+                    cube([1, size + 12, size - 18]);
+                translate([-25, -6, 17])
+                    cube([1, size + 12, size - 20]);
+            }
+            hull() {
+                translate([-25, -6, 17])
+                    cube([1, size + 12, size - 20]);
+                translate([-55, -6, 17])
+                    cube([1, size + 12, size - 20]);
+            }
+            hull() {
+                translate([-55, -6, 17])
+                    cube([1, size + 12, size - 20]);
+                if (off > 0) {
+                    translate([-71, 15, 17])
+                        cube([1, size - 12, size - 20]);
+                } else {
+                    translate([-70, 15, 17])
+                        cube([1, size - 12, size - 20]);
+                }
+            }
+        }
+        
+        translate([-26, 29.5, -size - 20])
+            cylinder(d = e3d_max_dia + 3, h = 100);
+        translate([-26 - e3d_v6_dist_x, 29.5, -size - 20])
+            cylinder(d = e3d_max_dia + 3, h = 100);
+        translate([-26 - e3d_v6_dist_x / 2, 29.5 - e3d_v6_dist_y, -size - 20])
+            cylinder(d = e3d_max_dia + 3, h = 100);
     }
 }