diff --git a/cad/playing.scad b/cad/playing.scad
new file mode 100644
index 0000000..67b865a
--- /dev/null
+++ b/cad/playing.scad
@@ -0,0 +1,6 @@
+translate{[0,0,10]}{
+difference(){
+	cube([20,20,20], center=true);
+	color([0.2,0.8,1]) sphere(13);
+}
+}