diff --git a/marching_cubes.cp36-win_amd64.pyd b/marching_cubes.cp36-win_amd64.pyd
new file mode 100644
index 0000000..46e240b
Binary files /dev/null and b/marching_cubes.cp36-win_amd64.pyd differ
diff --git a/vol2mesh.py b/vol2mesh.py
index fad9fc6..a5e56a2 100644
--- a/vol2mesh.py
+++ b/vol2mesh.py
@@ -4,9 +4,6 @@
 import numpy as np
 import glob
 from numpy import load
-from sets import Set
-
-from multiprocessing.dummy import Pool as ThreadPool
 import subprocess
 import threading
 import os