diff --git a/isosurface.scad b/isosurface.scad
index 41941754..e0484025 100644
--- a/isosurface.scad
+++ b/isosurface.scad
@@ -2998,15 +2998,15 @@ function mb_ring(r1,r2, cutoff=INF, influence=1, negative=false, hide_debug=fals
 //       bounding_box = [[-16,-13],[18,13]],
 //       pixel_size=0.4);
 // Example(2D,Med,NoAxes: Demonstration of `debug=true` with a variety of metaball shapes. The metaballs themselves are shown as outlines, with the underlying primitive shape shown in blue (for positive metaballs) or orange (for negative metaballs).
-   spec = [
-       IDENT,          mb_ring(r1=6, r2=9),
-       move([15,0]),   mb_circle(3),
-       IDENT,          mb_connector2d([10,10],[15,15],1),
-       move([-12,12])*zrot(45),    mb_rect([3,5]),
-       move([-14,-14])*zrot(-45),  mb_trapezoid(10,w1=7,w2=2,rounding=0.99),
-       move([10,-10]), mb_circle(2, cutoff=10, negative=true)
-   ];
-   metaballs2d(spec, [[-20,-20],[20,17]], pixel_size=0.5, debug=true);
+//   spec = [
+//       IDENT,          mb_ring(r1=6, r2=9),
+//       move([15,0]),   mb_circle(3),
+//       IDENT,          mb_connector2d([10,10],[15,15],1),
+//       move([-12,12])*zrot(45),    mb_rect([3,5]),
+//       move([-14,-14])*zrot(-45),  mb_trapezoid(10,w1=7,w2=2,rounding=0.99),
+//       move([10,-10]), mb_circle(2, cutoff=10, negative=true)
+//   ];
+//   metaballs2d(spec, [[-20,-20],[20,17]], pixel_size=0.5, debug=true);
 
 module metaballs2d(spec, bounding_box, pixel_size, pixel_count, isovalue=1, use_centers=false, smoothing=undef, exact_bounds=false, convexity=6, cp="centroid", anchor="origin", spin=0, atype="hull", show_stats=false, show_box=false, debug=false) {
     regionlist = metaballs2d(spec, bounding_box, pixel_size, pixel_count, isovalue, true, use_centers, smoothing, exact_bounds, show_stats, _debug=debug);