From 87533cbb1647610c651a7b2cbcb01a841351bbd9 Mon Sep 17 00:00:00 2001
From: Markus Lampert <markus@bibi.ca>
Date: Wed, 20 Sep 2017 10:46:29 -0700
Subject: [PATCH] Fixed PathHelix to not throw an exception if StartDepth ==
 FinalDepth.

---
 src/Mod/Path/PathScripts/PathHelix.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mod/Path/PathScripts/PathHelix.py b/src/Mod/Path/PathScripts/PathHelix.py
index a04b104928..3809caa22a 100644
--- a/src/Mod/Path/PathScripts/PathHelix.py
+++ b/src/Mod/Path/PathScripts/PathHelix.py
@@ -80,7 +80,7 @@ class ObjectHelix(PathCircularHoleBase.ObjectOp):
         from numpy import ceil, linspace
 
         if (obj.StartDepth.Value <= obj.FinalDepth.Value):
-            return
+            return ""
 
         out = "(helix_cut <{0}, {1}>, {2})".format(x0, y0,
                     ", ".join(map(str, (r_out, r_in, dr, obj.StartDepth.Value, obj.FinalDepth.Value, obj.StepDown.Value, obj.SafeHeight.Value,