From c2ada8eacd76b37a518fa4491561288d752719b8 Mon Sep 17 00:00:00 2001
From: Eivind Kvedalen <eivind@kvedalen.name>
Date: Sun, 29 Jul 2018 00:59:57 +0200
Subject: [PATCH] Fix for issue #3541: Normalize xDir vector for Hole feature
 to correct hole diameter.

---
 src/Mod/PartDesign/App/FeatureHole.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Mod/PartDesign/App/FeatureHole.cpp b/src/Mod/PartDesign/App/FeatureHole.cpp
index 4da6482bf55d..2848cd02aabb 100644
--- a/src/Mod/PartDesign/App/FeatureHole.cpp
+++ b/src/Mod/PartDesign/App/FeatureHole.cpp
@@ -985,6 +985,9 @@ App::DocumentObjectExecReturn *Hole::execute(void)
         else
             xDir = gp_Vec(0, -zDir.Z(), zDir.Y());
 
+        // Normalize xDir; this is needed as the computation above does not necessarily give a unit-length vector.
+        xDir.Normalize();
+
         if ( method == "Dimension" )
             length = Depth.getValue();
         else if ( method == "UpToFirst" ) {