From a3a03dcec4a3215fc95b016d61fdf89bb214cd05 Mon Sep 17 00:00:00 2001
From: "salt.wei" <salt.wei@bambulab.com>
Date: Wed, 12 Oct 2022 12:51:13 +0800
Subject: [PATCH] ENH: resume addition cooling fan after filament change

During filament changing, additional cooling fan may
be closed to reduce strings. Force to resume after
changing filament.

This logic is same with part cooling fan.
So no side effect.

Signed-off-by: salt.wei <salt.wei@bambulab.com>
Change-Id: I207c8692dbe5b0450ed0a3d11c4c9b70eda0e28c
---
 src/libslic3r/GCode/CoolingBuffer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libslic3r/GCode/CoolingBuffer.cpp b/src/libslic3r/GCode/CoolingBuffer.cpp
index 530293c9092..a7faa7c502c 100644
--- a/src/libslic3r/GCode/CoolingBuffer.cpp
+++ b/src/libslic3r/GCode/CoolingBuffer.cpp
@@ -811,6 +811,8 @@ std::string CoolingBuffer::apply_layer_cooldown(
             //BBS: force to write a fan speed command again
             if (m_current_fan_speed != -1)
                 new_gcode += GCodeWriter::set_fan(m_config.gcode_flavor, m_current_fan_speed);
+            if (m_additional_fan_speed != -1)
+                new_gcode += GCodeWriter::set_additional_fan(m_additional_fan_speed);
         }
         else if (line->type & CoolingLine::TYPE_EXTRUDE_END) {
             // Just remove this comment.