diff --git a/examples/example016.scad b/examples/example016.scad
new file mode 100644
index 00000000..0dfe50b1
--- /dev/null
+++ b/examples/example016.scad
@@ -0,0 +1,37 @@
+
+// example016.stl is derived from Mblock.stl
+// (c) 2009 Will Langford licensed under
+// the Creative Commons - GNU GPL license.
+// http://www.thingiverse.com/thing:753
+//
+// Jonas Pfeil converted the file to binary
+// STL and duplicated its content.
+
+module blk1() {
+	cube([ 65, 28, 28 ], center = true);
+}
+
+module blk2() {
+	difference() {
+		translate([ 0, 0, 7.5 ])
+			cube([ 60, 28, 14 ], center = true);
+		cube([ 8, 32, 32 ], center = true);
+	}
+}
+
+module chop() {
+	translate([ -14, 0, 0 ])
+		import_stl(filename = "example016.stl", convexity = 12);
+}
+
+difference() {
+	blk1();
+	for (alpha = [0, 90, 180, 270]) {
+		rotate(alpha, [ 1, 0, 0]) render(convexity = 12)
+			difference() {
+				blk2();
+				chop();
+			}
+	}
+}
+
diff --git a/examples/example016.stl b/examples/example016.stl
new file mode 100644
index 00000000..c24cdf77
Binary files /dev/null and b/examples/example016.stl differ
diff --git a/import.cc b/import.cc
index 116e91e5..87a2ae5a 100644
--- a/import.cc
+++ b/import.cc
@@ -123,7 +123,7 @@ PolySet *ImportNode::render_polyset(render_mode_e) const
 		}
 		else
 		{
-			f.read(80-4+4);
+			f.read(80-5+4);
 			while (1) {
 				struct {
 					float i, j, k;