diff --git a/examples/maze/maze3d.scad b/examples/maze/maze3d.scad
index 8ca236f9..d3aee8d4 100644
--- a/examples/maze/maze3d.scad
+++ b/examples/maze/maze3d.scad
@@ -14,29 +14,38 @@ maze3d();
 
 module maze3d() {
     cells = mz_cube(layers, rows, columns);
+    draw_3dmaze(cells, cell_width, road_width);
+}
+
+module draw_3dmaze(cells, cell_width, road_width) {
+    layers = len(cells);
+    rows = len(cells[0]);
+    columns = len(cells[0][0]);
 
     for(z = [0:layers - 1], y = [0:rows - 1], x = [0:columns - 1]) {
         cell = cells[z][y][x];
         type = mz_cube_get(cell, "t");
         
-        channels = [
-            z_road(type),
-            z != 0 && z_road(mz_cube_get(cells[z - 1][y][x], "t")),
-            y_road(type),
-            x_road(type),
-            y != 0 && y_road(mz_cube_get(cells[z][y - 1][x], "t")),
-            x != 0 && x_road(mz_cube_get(cells[z][y][x - 1], "t"))
-        ];
-        
-        translate([x, y, z] * cell_width)
-            drawCell(cell_width, road_width, channels);
+        if(type != "MASK") {
+            channels = [
+                z_road(type) ,
+                z != 0 && z_road(mz_cube_get(cells[z - 1][y][x], "t")),
+                y_road(type),
+                x_road(type),
+                y != 0 && y_road(mz_cube_get(cells[z][y - 1][x], "t")),
+                x != 0 && x_road(mz_cube_get(cells[z][y][x - 1], "t"))
+            ];
+            
+            translate([x, y, z] * cell_width)
+                drawCell(cell_width, road_width, channels);
+        }
     }
 
-    function z_road(type) = !has(["Z_WALL", "Z_Y_WALL", "Z_X_WALL", "Z_Y_X_WALL"], type);
+    function z_road(type) = !has(["Z_WALL", "Z_Y_WALL", "Z_X_WALL", "Z_Y_X_WALL", "MASK"], type);
 
-    function y_road(type) = !has(["Y_WALL", "Y_X_WALL", "Z_Y_WALL", "Z_Y_X_WALL"], type);
+    function y_road(type) = !has(["Y_WALL", "Y_X_WALL", "Z_Y_WALL", "Z_Y_X_WALL", "MASK"], type);
 
-    function x_road(type) = !has(["X_WALL", "Y_X_WALL", "Z_X_WALL", "Z_Y_X_WALL"], type);
+    function x_road(type) = !has(["X_WALL", "Y_X_WALL", "Z_X_WALL", "Z_Y_X_WALL", "MASK"], type);
 
     module drawCell(cell_width, road_width, channels) {
         half_cw = cell_width / 2;
diff --git a/examples/maze/maze3d_sphere.scad b/examples/maze/maze3d_sphere.scad
index bb17d8a3..0e5a601c 100644
--- a/examples/maze/maze3d_sphere.scad
+++ b/examples/maze/maze3d_sphere.scad
@@ -1,8 +1,6 @@
 use <experimental/mz_cube.scad>;
 use <experimental/mz_cube_initialize.scad>;
-use <experimental/mz_cube_get.scad>;
-use <util/has.scad>;
-use <crystal_ball.scad>;
+use <maze3d.scad>;
 
 radius = 6;  
 cell_width = 15;
@@ -30,57 +28,5 @@ module maze3d_sphere() {
         
     mz = mz_cube_initialize(mask = mask_sphere(radius));
     cells = mz_cube(start = [radius, radius, radius] / 2, init_cells = mz);
-
-    layers = len(cells);
-    rows = len(cells[0]);
-    columns = len(cells[0][0]);
-
-    for(z = [0:layers - 1], y = [0:rows - 1], x = [0:columns - 1]) {
-        cell = cells[z][y][x];
-        type = mz_cube_get(cell, "t");
-        
-        if(type != "MASK") {
-            channels = [
-                z_road(type) ,
-                z != 0 && z_road(mz_cube_get(cells[z - 1][y][x], "t")),
-                y_road(type),
-                x_road(type),
-                y != 0 && y_road(mz_cube_get(cells[z][y - 1][x], "t")),
-                x != 0 && x_road(mz_cube_get(cells[z][y][x - 1], "t"))
-            ];
-            
-            translate([x, y, z] * cell_width)
-                drawCell(cell_width, road_width, channels);
-        }
-    }
-
-    function z_road(type) = !has(["Z_WALL", "Z_Y_WALL", "Z_X_WALL", "Z_Y_X_WALL", "MASK"], type);
-
-    function y_road(type) = !has(["Y_WALL", "Y_X_WALL", "Z_Y_WALL", "Z_Y_X_WALL", "MASK"], type);
-
-    function x_road(type) = !has(["X_WALL", "Y_X_WALL", "Z_X_WALL", "Z_Y_X_WALL", "MASK"], type);
-
-    module drawCell(cell_width, road_width, channels) {
-        half_cw = cell_width / 2;
-        half_rw = road_width / 2;
-
-        crystal_ball(half_rw);
-
-        rots = [
-            [0, 0, 0],
-            [180, 0, 0],
-            [-90, 0, 0],
-            [0, 90, 0],
-            [90, 0, 0],
-            [0, -90, 0]
-        ];
-        
-       for(i = [0:5]) {
-            if(channels[i]) {
-                rotate(rots[i])
-                linear_extrude(half_cw)
-                    circle(half_rw);
-            }
-        }
-    }
+    draw_3dmaze(cells, cell_width, road_width);
 }
\ No newline at end of file