diff --git a/share/extensions/Poly3DObjects/cuboct.obj b/share/extensions/Poly3DObjects/cuboct.obj
--- /dev/null
@@ -0,0 +1,30 @@
+#Name:Cuboctahedron\r
+#Type:Face_specified\r
+\r
+v -1. 0 0\r
+v -0.5 -0.5 -0.70710678\r
+v -0.5 -0.5 0.70710678\r
+v -0.5 0.5 -0.70710678\r
+v -0.5 0.5 0.70710678\r
+v 0 -1. 0\r
+v 0 1. 0\r
+v 0.5 -0.5 -0.70710678\r
+v 0.5 -0.5 0.70710678\r
+v 0.5 0.5 -0.70710678\r
+v 0.5 0.5 0.70710678\r
+v 1. 0 0\r
+\r
+f 12 11 9\r
+f 3 5 1\r
+f 6 9 3\r
+f 5 11 7\r
+f 8 10 12\r
+f 1 4 2\r
+f 2 8 6\r
+f 7 10 4\r
+f 4 10 8 2\r
+f 3 9 11 5\r
+f 9 6 8 12\r
+f 3 1 2 6\r
+f 5 7 4 1\r
+f 11 12 10 7\r