From 172253cfd7eaeb9ee052f6359b139f1f6ca56109 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Thu, 15 Dec 2011 22:05:15 +0100
Subject: [PATCH] Always use rectilinear infill for internal-solid surfaces

---
 lib/Slic3r/Fill.pm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Slic3r/Fill.pm b/lib/Slic3r/Fill.pm
index 14fa7deff..7469e8fc3 100644
--- a/lib/Slic3r/Fill.pm
+++ b/lib/Slic3r/Fill.pm
@@ -98,6 +98,8 @@ sub make_fill {
             if ($is_bridge) {
                 $filler = 'rectilinear';
                 $flow_width = sqrt($Slic3r::bridge_flow_ratio * ($Slic3r::nozzle_diameter**2));
+            } elsif ($surface->surface_type eq 'internal-solid') {
+                $filler = 'rectilinear';
             }
         } else {
             next SURFACE unless $density > 0;