Wipe tower: cold ramming

src/libslic3r/GCode/WipeTower.cpp

@@ -633,6 +633,7 @@ void WipeTower::set_extruder(size_t idx, const PrintConfig& config)
         m_filpar[idx].cooling_initial_speed   = float(config.filament_cooling_initial_speed.get_at(idx));
         m_filpar[idx].cooling_final_speed     = float(config.filament_cooling_final_speed.get_at(idx));
         m_filpar[idx].filament_skinnydip_move              = config.filament_skinnydip_move.get_at(idx);
+        m_filpar[idx].filament_cold_ramming                = config.filament_cold_ramming.get_at(idx);
         m_filpar[idx].filament_skinnydip_loading_speed     = float(config.filament_skinnydip_loading_speed.get_at(idx));
         m_filpar[idx].filament_skinnydip_unloading_speed   = float(config.filament_skinnydip_unloading_speed.get_at(idx));
         m_filpar[idx].filament_skinnydip_distance          = float(config.filament_skinnydip_distance.get_at(idx));
@@ -930,6 +931,11 @@ void WipeTower::toolchange_Unload(
     }
     
 
+    bool cold_ramming = m_filpar[m_current_tool].filament_cold_ramming;
+
+    if (cold_ramming)
+        writer.set_extruder_temp(0, false);
+
     // now the ramming itself:
     while (do_ramming && i < m_filpar[m_current_tool].ramming_speed.size())
     {
@@ -973,7 +979,7 @@ void WipeTower::toolchange_Unload(
     // be already set and there is no need to change anything. Also, the temperature could be changed
     // for wrong extruder.
     if (m_semm) {
-        if (new_temperature != 0 && (new_temperature != m_old_temperature || is_first_layer()) ) { 	// Set the extruder temperature, but don't wait.
+        if (new_temperature != 0 && (new_temperature != m_old_temperature || is_first_layer() || cold_ramming) ) { 	// Set the extruder temperature, but don't wait.
             // If the required temperature is the same as last time, don't emit the M104 again (if user adjusted the value, it would be reset)
             // However, always change temperatures on the first layer (this is to avoid issues with priming lines turned off).
             writer.set_extruder_temp(new_temperature, false);

src/libslic3r/GCode/WipeTower.hpp

@@ -238,6 +238,7 @@ public:
         float               delay = 0.f ;
 
 		int				    filament_skinnydip_move = 0;
+		bool				filament_cold_ramming = false;
 		float               filament_skinnydip_loading_speed = 0.f;
 		float               filament_skinnydip_unloading_speed = 0.f;
 		float               filament_skinnydip_distance = 0.f;

src/libslic3r/Preset.cpp

@@ -478,7 +478,7 @@ static std::vector<std::string> s_Preset_print_options {
 static std::vector<std::string> s_Preset_filament_options {
     "filament_colour", "filament_diameter", "filament_type", "filament_soluble", "filament_notes", "filament_max_volumetric_speed",
     "extrusion_multiplier", "filament_density", "filament_cost", "filament_spool_weight", "filament_loading_speed", "filament_loading_speed_start", "filament_load_time",
-    "filament_unloading_speed", "filament_unloading_speed_start", "filament_unload_time", "filament_toolchange_delay", "filament_cooling_moves", "filament_skinnydip_move", "filament_skinnydip_loading_speed", "filament_skinnydip_unloading_speed", "filament_skinnydip_distance", "filament_skinnydip_number_of_dips",
+    "filament_unloading_speed", "filament_unloading_speed_start", "filament_unload_time", "filament_toolchange_delay", "filament_cooling_moves", "filament_skinnydip_move", "filament_cold_ramming", "filament_skinnydip_loading_speed", "filament_skinnydip_unloading_speed", "filament_skinnydip_distance", "filament_skinnydip_number_of_dips",
     "filament_cooling_initial_speed", "filament_cooling_final_speed", "filament_ramming_parameters", "filament_minimal_purge_on_wipe_tower",
     "filament_multitool_ramming", "filament_multitool_ramming_volume", "filament_multitool_ramming_flow", 
     "temperature", "idle_temperature", "first_layer_temperature", "bed_temperature", "first_layer_bed_temperature", "fan_always_on", "cooling", "min_fan_speed",

src/libslic3r/Print.cpp

@@ -220,6 +220,7 @@ bool Print::invalidate_state_by_config_options(const ConfigOptionResolver & /* n
             || opt_key == "filament_cooling_moves"
             || opt_key == "filament_skinnydip_number_of_dips"
             || opt_key == "filament_skinnydip_move"
+            || opt_key == "filament_cold_ramming"
             || opt_key == "filament_skinnydip_loading_speed"
             || opt_key == "filament_skinnydip_unloading_speed"
             || opt_key == "filament_skinnydip_distance"

src/libslic3r/PrintConfig.cpp

@@ -1093,6 +1093,13 @@ void PrintConfigDef::init_fff_params()
     def->mode = comExpert;
     def->set_default_value(new ConfigOptionFloats { 0. });
 
+    def = this->add("filament_cold_ramming", coBools);
+    def->label = L("ELIAS: Cold ramming");
+    def->tooltip = L("");
+    def->min = 0;
+    def->mode = comExpert;
+    def->set_default_value(new ConfigOptionBools { false });
+
     def = this->add("filament_skinnydip_move", coInts);
     def->label = L("ELIAS: Skinnydip is performed after N-th cooling move");
     def->tooltip = L("Zero - before cooling. Larger than number of cooling moves - after cooling.");

src/libslic3r/PrintConfig.hpp

@@ -733,6 +733,7 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionFloats,              filament_multitool_ramming_volume))
     ((ConfigOptionFloats,              filament_multitool_ramming_flow))
     ((ConfigOptionInts,                filament_skinnydip_move))
+    ((ConfigOptionBools,               filament_cold_ramming))
     ((ConfigOptionFloats,              filament_skinnydip_loading_speed))
     ((ConfigOptionFloats,              filament_skinnydip_unloading_speed))
     ((ConfigOptionFloats,              filament_skinnydip_distance))

src/slic3r/GUI/Tab.cpp

@@ -2274,6 +2274,7 @@ void TabFilament::build()
         optgroup->append_single_option_line("filament_skinnydip_loading_speed");
         optgroup->append_single_option_line("filament_skinnydip_unloading_speed");
         optgroup->append_single_option_line("filament_skinnydip_distance");
+        optgroup->append_single_option_line("filament_cold_ramming");
 
         create_line_with_widget(optgroup.get(), "filament_ramming_parameters", "", [this](wxWindow* parent) {
             auto ramming_dialog_btn = new wxButton(parent, wxID_ANY, _(L("Ramming settings"))+dots, wxDefaultPosition, wxDefaultSize, wxBU_EXACTFIT);