diff --git a/viewer/src/utils/python/Makefile b/viewer/src/utils/python/Makefile
index 78179ab..457256c 100644
--- a/viewer/src/utils/python/Makefile
+++ b/viewer/src/utils/python/Makefile
@@ -7,6 +7,9 @@ run-rewrite:
 	uv run rewrite_materials.py ../../../example/hello-wall.ifcx
 run-calc-properties:
 	uv run calc_properties.py ../../../example/hello-wall.ifcx > out-props.ifcx
+run-hack:
+	clear
+	uv run hack.py ../../../example/hello-wall.ifcx
 
 
 
diff --git a/viewer/src/utils/python/hack.py b/viewer/src/utils/python/hack.py
new file mode 100644
index 0000000..5410c8e
--- /dev/null
+++ b/viewer/src/utils/python/hack.py
@@ -0,0 +1,44 @@
+import itertools
+import json
+import sys
+import numpy as np
+
+# Load file
+obj = json.load(open(sys.argv[1]))
+
+def volume(data):
+    indices = np.array(data["faceVertexIndices"], dtype=int)
+    points = np.array(data["points"], dtype=float)
+    ref = points.mean(axis=0)
+    vol = 0.0
+    for i in range(0, len(indices), 3):
+        a = points[indices[i    ]] - ref
+        b = points[indices[i + 1]] - ref
+        c = points[indices[i + 2]] - ref
+        vol += np.dot(np.cross(a, b), c) / 6.0
+    return vol
+
+def height(data):
+    points = np.array(data["points"], dtype=float)
+    return points[:,2].max() - points[:,2].min()
+
+
+# Parents
+parents = dict(itertools.chain.from_iterable(([(c, o['path']) for k, c in o['children'].items() if k != 'Void'] for o in obj['data'] if o.get('children'))))
+
+# Meshes
+for d in [d for d in list(obj['data']) if d.get('attributes', {}).get('usd::usdgeom::mesh')]:
+    mesh = d['attributes']['usd::usdgeom::mesh']
+    print("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@")
+    print("FACES")
+    print(mesh['faceVertexIndices'])
+    print("VERTICES")
+    print(mesh['points'])
+
+ostream = None
+try:
+    ostream = open(sys.argv[2], 'w')
+except: 
+    ostream = sys.stdout
+
+#json.dump(obj, ostream, indent=2)