From 4ef50375cb21d30aec5d247d906fa42110b42858 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 530293c90..a7faa7c50 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.