diff --git a/examples/image_slicer.scad b/examples/image_slicer.scad
index d0a838b7..eab8c341 100644
--- a/examples/image_slicer.scad
+++ b/examples/image_slicer.scad
@@ -116,35 +116,20 @@ module image_slicer(levels, level_step, contour_width) {
 
     max_h = (floor(255 / level_step) + 1) * level_step;
 
-	module contour_lines(points, z, contour_width) {
-		for(row = marching_squares(points, z)) {
-			for(line = row) {
-				hull_polyline2d(line, width = contour_width);
+	module contours(points, z, contour_width) {
+		union() {
+			for(row = marching_squares(points, [0, z])) {
+				for(iso_band = row) {
+					polygon([for(p = iso_band) [p[0], p[1]]]);
+				}
 			}
 		}
 	}
 
-    /*
-	    Even though we can calculate isobands using [the algorithm](https://en.wikipedia.org/wiki/Marching_squares#Isoband),
-		it's easier to fill pixels when the z value of the point is lower than the z parameter.
-    */
-	module simple_isobands(points, z) {
-		for(row = points) {
-			for(p = row) {
-				if(p[2] < z) {
-					translate([p[0], p[1]])
-						square(1, center = true);
-				}
-			}
-		}  		
-	}
-
     for(z = [level_step:level_step:255]) {
         linear_extrude((max_h - z) / level_step)
-        union() {
-            contour_lines(points, z, contour_width);
-            simple_isobands(points, z);
-        }    
+        offset(0.01) // Avoid warning
+		    contours(points, z, contour_width);   
     }
 }