From b5bd216f5cd30406a877c0444ef23d4524ddc5f2 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Sun, 28 Oct 2012 14:23:47 +0100
Subject: [PATCH] Do not combine infill for bottom layer

---
 lib/Slic3r/Print/Object.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Slic3r/Print/Object.pm b/lib/Slic3r/Print/Object.pm
index d7fad828b..09ed0b05e 100644
--- a/lib/Slic3r/Print/Object.pm
+++ b/lib/Slic3r/Print/Object.pm
@@ -434,7 +434,7 @@ sub combine_infill {
             # for each possible depth, look for intersections with the lower layer
             # we do this from the greater depth to the smaller
             for (my $d = $Slic3r::Config->infill_every_layers - 1; $d >= 1; $d--) {
-                next if ($i - $d) < 0;
+                next if ($i - $d) <= 0; # do not combine infill for bottom layer
                 my $lower_layerm = $self->layer($i - 1)->regions->[$region_id];
                 
                 # select surfaces of the lower layer having the depth we're looking for