diff --git a/scenes/phys_cube.tscn b/scenes/phys_cube.tscn
index 5714260..f651a25 100644
--- a/scenes/phys_cube.tscn
+++ b/scenes/phys_cube.tscn
@@ -1,12 +1,9 @@
-[gd_scene load_steps=3 format=3 uid="uid://nnxd1djnxech"]
-
-[ext_resource type="Script" path="res://scripts/physics_object.gd" id="1_lx1c5"]
+[gd_scene load_steps=2 format=3 uid="uid://nnxd1djnxech"]
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_h6ouo"]
 size = Vector3(9.24554, 1, 1)
 
-[node name="PhysCube" type="RigidBody3D"]
-script = ExtResource("1_lx1c5")
+[node name="PhysCube" type="RigidBody3D" groups=["can_hold"]]
 
 [node name="CSGBox3D" type="CSGBox3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.5, 0)