From 44016b38c52bf358ca0e8332f4ee04c043774271 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Wed, 24 Oct 2012 19:13:40 +0200
Subject: [PATCH] Distribute skirt loops across all extruders

---
 lib/Slic3r/Print.pm | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/Slic3r/Print.pm b/lib/Slic3r/Print.pm
index 3669187b29..d7bbf75d9a 100644
--- a/lib/Slic3r/Print.pm
+++ b/lib/Slic3r/Print.pm
@@ -711,7 +711,11 @@ sub write_gcode {
             $gcode .= $gcodegen->set_acceleration($Slic3r::Config->perimeter_acceleration);
             # skip skirt if we have a large brim
             if ($layer_id < $Slic3r::Config->skirt_height) {
-                $gcode .= $gcodegen->extrude_loop($_, 'skirt') for @{$self->skirt};
+                # distribute skirt loops across all extruders
+                for my $i (0 .. $#{$self->skirt}) {
+                    $gcode .= $gcodegen->set_extruder($self->extruders->[ ($i/@{$self->extruders}) % @{$self->extruders} ]);
+                    $gcode .= $gcodegen->extrude_loop($self->skirt->[$i], 'skirt');
+                }
             }
             $skirt_done++;
         }