From ca5f6da08d38c75e0e00ea2604de9709b9caa8aa Mon Sep 17 00:00:00 2001
From: Vojtech Bubnik <bubnikv@gmail.com>
Date: Mon, 11 Sep 2023 11:11:20 +0200
Subject: [PATCH] Fix of Extruder selection ignored when using support material
 without interface #11281

---
 src/libslic3r/Support/SupportCommon.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libslic3r/Support/SupportCommon.cpp b/src/libslic3r/Support/SupportCommon.cpp
index f475204ade..64a6924a3c 100644
--- a/src/libslic3r/Support/SupportCommon.cpp
+++ b/src/libslic3r/Support/SupportCommon.cpp
@@ -1729,7 +1729,8 @@ void generate_support_toolpaths(
                         // Filler and its parameters
                         filler, float(density),
                         // Extrusion parameters
-                        ExtrusionRole::SupportMaterialInterface, interface_flow);
+                        interface_as_base ? ExtrusionRole::SupportMaterial : ExtrusionRole::SupportMaterialInterface,
+                        interface_flow);
                 }
             };
             const bool top_interfaces = config.support_material_interface_layers.value != 0;