diff --git a/obj/testcube_trans.obj b/obj/testcube_trans.obj
index 929f565..f7b665e 100644
--- a/obj/testcube_trans.obj
+++ b/obj/testcube_trans.obj
@@ -12,3 +12,8 @@ f 5 6 8 7
 f 7 8 2 1
 f 2 8 6 4
 f 7 1 3 5
+
+cstype bezier
+deg 3
+curv 1 2 3 4
+end