1 files changed, 6 insertions, 1 deletions
diff --git a/testdata/scad/features/linear_extrude-tests.scad b/testdata/scad/features/linear_extrude-tests.scad
index 680bf53..d6dee02 100644
--- a/testdata/scad/features/linear_extrude-tests.scad
+++ b/testdata/scad/features/linear_extrude-tests.scad
@@ -9,7 +9,12 @@ linear_extrude(height=10) square([10,10]);
 translate([19,5,0]) linear_extrude(height=10, center=true) difference() {circle(5); circle(3);}
 translate([31.5,2.5,0]) linear_extrude(height=10, twist=-45) polygon(points = [[-5,-2.5], [5,-2.5], [0,2.5]]);
 
-translate([0,20,0]) linear_extrude(height=20, twist=45, slices=2) square([10,10]);
+translate([0,20,0]) linear_extrude(height=20, twist=45, slices=2) {
+    difference() {
+        square([10,10]);
+        translate([1,1]) square([8,8]);
+    }
+}
 translate([19,20,0]) linear_extrude(height=20, twist=45, slices=10) square([10,10]);
 
 translate([0,-15,0]) linear_extrude(5) square([10,10]);