diff --git a/compiler/base/vector.py b/compiler/base/vector.py
index 8bf09f7d..6688462d 100644
--- a/compiler/base/vector.py
+++ b/compiler/base/vector.py
@@ -28,6 +28,7 @@ class vector():
         else:
             self.x = float(x)
             self.y = float(y)
+        self._hash = hash((self.x,self.y))
 
     def __str__(self):
         """ override print function output """
@@ -97,7 +98,7 @@ class vector():
         Note: This assumes that you DON'T CHANGE THE VECTOR or it will
         break things.
         """
-        return hash((self.x,self.y))
+        return self._hash
 
     def snap_to_grid(self):
         self.x = self.snap_offset_to_grid(self.x)
diff --git a/compiler/router/vector3d.py b/compiler/router/vector3d.py
index 0d183021..066f843f 100644
--- a/compiler/router/vector3d.py
+++ b/compiler/router/vector3d.py
@@ -27,7 +27,7 @@ class vector3d():
             self.x = x
             self.y = y
             self.z = z
-
+        self._hash = hash((self.x,self.y,self.z))
             
     def __str__(self):
         """ override print function output """
@@ -96,7 +96,7 @@ class vector3d():
         Note: This assumes that you DON'T CHANGE THE VECTOR or it will
         break things.
         """
-        return hash((self.x,self.y,self.z))
+        return self._hash
 
 
     def __rsub__(self, other):