Added cable tie mounts for lm8uu bearings in carriages, more render switches.

lib/linear_bearing.scad

 x_rail_block_len = (y_carriage_length - x_rail_cutout_y) / 2;
 
 x_carriage_width = 80;
-x_carriage_len_add = 10;
+x_carriage_len_add = 12;
 x_carriage_wall = 10;
 x_carriage_bearing_off = 3;
 
 
 sensor_mount_width = (2 * universal_mount_hole_off) + sensor_mount_width_add;
 
+cable_tie_width = 3.5;
+cable_tie_height = 2.0;
+cable_tie_dia_add = 1.0;
+
 draw_x_carriage = false;
 draw_e3d_fan_duct = true;
+draw_radial_fan = true;
+draw_bed_sensor = true;
+draw_e3d_hotends = true;
 
 draw_y_carriage = false;
 draw_y_carriage_idlers = true;
 draw_rail_len = 200;
 
-
-// TODO add cable tie canal for lm8uu mounting
 // TODO get ready to actually print these
 
-
 module nut_cut() {
-    translate([-nut_cut_width / 2, 1, nut_cut_off - nut_cut_height]) {
+    translate([-nut_cut_width / 2, 2, nut_cut_off - nut_cut_height]) {
         cube([nut_cut_width, nut_cut_depth, nut_cut_height]);
         translate([nut_cut_width / 2, -5, nut_cut_height - nut_cut_off])
             rotate([-90, 0, 0])
     }
 }
 
+module lm8uu_cable_tie() {
+    difference() {
+        union() {
+            cylinder(d = lm8uu_outer + (2 * (cable_tie_height + cable_tie_dia_add)), h = cable_tie_width);
+            
+            translate([-8.5, 6, 0])
+                cube([17, 10, cable_tie_width]);
+        }
+        
+        translate([0, 0, -1])
+            cylinder(d = lm8uu_outer + (2 * cable_tie_dia_add), h = cable_tie_width + 2);
+    }
+}
+
 module generate_spacer(pos) {
     color("green")
     translate([pos[0], pos[1], -0.5])
             translate([0, 0, y_carriage_length - lm8uu_height - y_carriage_rail_support - lm8uu_len_add / 2])
                 cylinder(d = lm8uu_outer + lm8uu_dia_add, h = lm8uu_height + lm8uu_len_add);
         }
+        
+        translate([(lm8uu_outer + lm8uu_dia_add) / 2 + y_carriage_rail_support, 0, 0])
+        rotate([90, 0, 0]) {
+            translate([0, 0, -11])
+                lm8uu_cable_tie();
+            
+            translate([0, 0, -20])
+                lm8uu_cable_tie();
+            
+            translate([0, 0, -83])
+                lm8uu_cable_tie();
+            
+            translate([0, 0, -92])
+                lm8uu_cable_tie();
+        }
     }
     
     color("magenta")
             }
         }
         
+        // bearing cable tie mount front
+        translate([8, x_carriage_len_add, 0])
+            rotate([90, 0, 90])
+            lm8uu_cable_tie();
+        translate([18, x_carriage_len_add, 0])
+            rotate([90, 0, 90])
+            lm8uu_cable_tie();
+        translate([58, x_carriage_len_add, 0])
+            rotate([90, 0, 90])
+            lm8uu_cable_tie();
+        translate([68, x_carriage_len_add, 0])
+            rotate([90, 0, 90])
+            lm8uu_cable_tie();
+        
+        // bearing cable tie mount back
+        translate([8, x_carriage_len_add + x_rail_dist, 0])
+            rotate([90, 0, 90])
+            lm8uu_cable_tie();
+        translate([18, x_carriage_len_add + x_rail_dist, 0])
+            rotate([90, 0, 90])
+            lm8uu_cable_tie();
+        translate([58, x_carriage_len_add + x_rail_dist, 0])
+            rotate([90, 0, 90])
+            lm8uu_cable_tie();
+        translate([68, x_carriage_len_add + x_rail_dist, 0])
+            rotate([90, 0, 90])
+            lm8uu_cable_tie();
+        
         /* mounting for hotend / tool */
         
         // left mounting screw
             cylinder(d = e3d_hole_dia, h = x_carriage_wall + 12);
         
         // bottom mounting screw
-        translate([x_carriage_width / 2, 19, -1])
+        translate([x_carriage_width / 2, x_carriage_len_add + 9, -1])
             cylinder(d = e3d_hole_dia, h = x_carriage_wall + 12);
         // top mounting screw
-        translate([x_carriage_width / 2, x_carriage_length - 19, -1])
+        translate([x_carriage_width / 2, x_carriage_length - x_carriage_len_add - 9, -1])
             cylinder(d = e3d_hole_dia, h = x_carriage_wall + 12);
         
         // fan mount attachment holes on left side
     translate([(x_carriage_width - sensor_mount_width) / 2, -sensor_mount_wall, 0])
         sensor_mount();
     
-    translate([(x_carriage_width - sensor_mount_width) / 2, x_carriage_length, 0])
-        radial_fan_mount();
+    translate([(x_carriage_width - sensor_mount_width) / 2, x_carriage_length, 0]) {
+        radial_fan_mount(true);
+        
+        translate([0, 15 + sensor_mount_wall, 0])
+            radial_fan_mount(false);
+    }
     
     e3d_v6_triple_mount();
 }
 
-module radial_fan_mount() {
+module radial_fan_mount(with_fan = true) {
     color("yellow")
     universal_mount_plate();
     
-    color("yellow")
-    translate([-52, 0, 0])
-        cube([52, sensor_mount_wall, x_carriage_wall]);
-    
-    color("yellow")
-    translate([-9, 0, x_carriage_wall])
-    
-    difference() {
-        cube([9, sensor_mount_wall, 13]);
-        translate([4.5, -1, 9])
-            rotate([-90, 0, 0])
-            cylinder(d = 4.2, h = sensor_mount_wall + 2);
-    }
-    
-    color("yellow")
-    translate([-52, 0, -23])
-    difference() {
-        cube([9, sensor_mount_wall, 23]);
-        translate([4.5, -1, 4])
-            rotate([-90, 0, 0])
-            cylinder(d = 4.2, h = sensor_mount_wall + 2);
+    for (i = [0 : 52 + sensor_mount_width : 52 + sensor_mount_width])
+    translate([i, 0, 0]) {
+        color("yellow")
+        translate([-52, 0, 0])
+            cube([52, sensor_mount_wall, x_carriage_wall]);
+        
+        color("yellow")
+        translate([-9, 0, x_carriage_wall])
+        
+        difference() {
+            cube([9, sensor_mount_wall, 13]);
+            translate([4.5, -1, 9])
+                rotate([-90, 0, 0])
+                cylinder(d = 4.2, h = sensor_mount_wall + 2);
+        }
+        
+        color("yellow")
+        translate([-52, 0, -23])
+        difference() {
+            cube([9, sensor_mount_wall, 23]);
+            translate([4.5, -1, 4])
+                rotate([-90, 0, 0])
+                cylinder(d = 4.2, h = sensor_mount_wall + 2);
+        }
+        
+        if (draw_radial_fan && with_fan) {
+            // 5015 fan mockup
+            %color("gray")
+            translate([-(x_carriage_width - sensor_mount_width) / 2 + 4, sensor_mount_wall, 0])
+                rotate([90, 0, 180])
+                fan_5015();
+        }
     }
-    
-    // 5015 fan mockup
-    %color("gray")
-    translate([-(x_carriage_width - sensor_mount_width) / 2 + 4, sensor_mount_wall, 0])
-        rotate([90, 0, 180])
-        fan_5015();
 }
 
 module fan_5015() {
             cylinder(d = sensor_dia, h = sensor_mount_height + 2);
     }
     
-    // sensor mockup
-    %translate([sensor_mount_width / 2, -(sensor_dia + sensor_dia_add) / 2 + sensor_mount_y_offset, -22]) {
-        color("gray")
-        cylinder(d = 18.2, h = 55);
-        
-        color("orange")
-        translate([0, 0, -10])
-            cylinder(d = 18.2, h = 10);
+    if (draw_bed_sensor) {
+        // sensor mockup
+        %translate([sensor_mount_width / 2, -(sensor_dia + sensor_dia_add) / 2 + sensor_mount_y_offset, -22]) {
+            color("gray")
+            cylinder(d = 18.2, h = 55);
+            
+            color("orange")
+            translate([0, 0, -10])
+                cylinder(d = 18.2, h = 10);
+        }
     }
 }
 
 module e3d_v6_triple_mount() {
+    if (draw_e3d_hotends)
     translate([x_carriage_width / 2, x_carriage_length / 2, -e3d_v6_height + x_carriage_wall + e3d_v6_z_off]) {
         
         color("red")