From ea3266c6e91ac3360ca5b9cf539c2d04718ae0ec Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Sun, 23 Mar 2014 16:56:41 +0100
Subject: [PATCH] Fix modifiers

---
 lib/Slic3r/Print/Object.pm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/Slic3r/Print/Object.pm b/lib/Slic3r/Print/Object.pm
index b50ee98c3..a5ed5d18d 100644
--- a/lib/Slic3r/Print/Object.pm
+++ b/lib/Slic3r/Print/Object.pm
@@ -246,7 +246,10 @@ sub slice {
                     
                     # remove such parts from original region
                     $other_layerm->slices->clear;
-                    $other_layerm->append($_) for @{ diff($other_slices, $my_parts) };
+                    $other_layerm->slices->append(Slic3r::Surface->new(
+                        expolygon    => $_,
+                        surface_type => S_TYPE_INTERNAL,
+                    )) for @{ diff_ex($other_slices, [ map @$_, @$my_parts ]) };
                 }
             }
         }