[FEATURE] Add filament max speed override

src/libslic3r/GCode.cpp

@@ -3268,6 +3268,10 @@ double cap_speed(
     if (filament_volumetric_cap > 0) {
         speed = std::min(speed, filament_volumetric_cap / path_attr.mm3_per_mm);
     }
+    const double filament_max_speed{config.filament_max_speed.get_at(extruder_id)};
+    if (filament_max_speed > 0) {
+        speed = std::min(speed, filament_max_speed);
+    }
     if (path_attr.role == ExtrusionRole::InternalInfill) {
         const double infill_cap{
             path_attr.maybe_self_crossing ?

src/libslic3r/GCode/WipeTower.cpp

@@ -542,6 +542,7 @@ WipeTower::ToolChangeResult WipeTower::construct_tcr(WipeTowerWriter& writer,
 
 
 WipeTower::WipeTower(const Vec2f& pos, double rotation_deg, const PrintConfig& config, const PrintRegionConfig& default_region_config, const std::vector<std::vector<float>>& wiping_matrix, size_t initial_tool) :
+    m_config(&config),
     m_semm(config.single_extruder_multi_material.value),
     m_wipe_tower_pos(pos),
     m_wipe_tower_width(float(config.wipe_tower_width)),
@@ -644,6 +645,10 @@ void WipeTower::set_extruder(size_t idx, const PrintConfig& config)
     float nozzle_diameter = float(config.nozzle_diameter.get_at(idx));
     m_filpar[idx].nozzle_diameter = nozzle_diameter; // to be used in future with (non-single) multiextruder MM
 
+    float max_speed = float(config.filament_max_speed.get_at(idx));
+    if (max_speed > 0.f)
+        m_filpar[idx].max_speed = max_speed;
+
     float max_vol_speed = float(config.filament_max_volumetric_speed.get_at(idx));
     if (max_vol_speed!= 0.f)
         m_filpar[idx].max_e_speed = (max_vol_speed / filament_area());
@@ -1161,7 +1166,11 @@ void WipeTower::toolchange_Wipe(
 	float dy = (is_first_layer() ? m_extra_flow : m_extra_spacing_wipe) * m_perimeter_width; // Don't use the extra spacing for the first layer, but do use the spacing resulting from increased flow.
     // All the calculations in all other places take the spacing into account for all the layers.
 
-    const float target_speed = is_first_layer() ? m_first_layer_speed * 60.f : m_infill_speed * 60.f;
+    float max_speed = std::numeric_limits<float>::max();
+    if (m_config->filament_max_speed.get_at(m_current_tool) > 0) {
+        max_speed = float(m_config->filament_max_speed.get_at(m_current_tool));
+    }
+    const float target_speed = std::min(max_speed, (is_first_layer() ? m_first_layer_speed * 60.f : m_infill_speed * 60.f));
     float wipe_speed = 0.33f * target_speed;
 
     // if there is less than 2.5*line_width to the edge, advance straightaway (there is likely a blob anyway)

src/libslic3r/GCode/WipeTower.hpp

@@ -252,6 +252,7 @@ class WipeTower
         float               cooling_final_speed = 0.f;
         float               ramming_line_width_multiplicator = 1.f;
         float               ramming_step_multiplicator = 1.f;
+        float               max_speed = std::numeric_limits<float>::max();
         float               max_e_speed = std::numeric_limits<float>::max();
         std::vector<float>  ramming_speed;
         float               nozzle_diameter;
@@ -275,6 +276,7 @@ class WipeTower
     }
 
 
+	const PrintConfig* m_config;
 	bool   m_semm               = true; // Are we using a single extruder multimaterial printer?
 	bool   m_is_mk4mmu3         = false;
     bool   m_switch_filament_monitoring = false;

src/libslic3r/Preset.cpp

@@ -596,7 +596,9 @@ static std::vector<std::string> s_Preset_filament_options {
     // Shrinkage compensation
     "filament_shrinkage_compensation_xy", "filament_shrinkage_compensation_z",
     // Seams overrides
-    "filament_seam_gap_distance"
+    "filament_seam_gap_distance",
+    // BOSS
+    "filament_max_speed",
 };
 
 static std::vector<std::string> s_Preset_machine_limits_options {

src/libslic3r/Print.cpp

@@ -259,6 +259,7 @@ bool Print::invalidate_state_by_config_options(const ConfigOptionResolver & /* n
             || opt_key == "filament_multitool_ramming"
             || opt_key == "filament_multitool_ramming_volume"
             || opt_key == "filament_multitool_ramming_flow"
+            || opt_key == "filament_max_speed"
             || opt_key == "filament_max_volumetric_speed"
             || opt_key == "filament_infill_max_speed"
             || opt_key == "filament_infill_max_crossing_speed"

src/libslic3r/PrintConfig.cpp

@@ -1309,6 +1309,16 @@ void PrintConfigDef::init_fff_params()
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionStrings { "" });
 
+    def = this->add("filament_max_speed", coFloats);
+    def->label = L("Max speed");
+    def->tooltip = L("Maximum speed allowed for this filament. Limits the maximum "
+        "speed of a print to the minimum of the print speed and the filament speed. "
+        "Set zero for no limit.");
+    def->sidetext = L("mm/s");
+    def->min = 0;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloats{ 0. });
+
     def = this->add("filament_max_volumetric_speed", coFloats);
     def->label = L("Max volumetric speed");
     def->tooltip = L("Maximum volumetric speed allowed for this filament. Limits the maximum volumetric "

src/libslic3r/PrintConfig.hpp

@@ -926,6 +926,8 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionFloat,                small_area_infill_flow_compensation_compensation_factor_7))
     ((ConfigOptionFloat,                small_area_infill_flow_compensation_compensation_factor_8))
     ((ConfigOptionFloat,                small_area_infill_flow_compensation_compensation_factor_9))
+    // BOSS
+    ((ConfigOptionFloats,               filament_max_speed))
 )
 
 static inline std::string get_extrusion_axis(const GCodeConfig &cfg)

src/slic3r/GUI/Tab.cpp

@@ -2374,6 +2374,7 @@ void TabFilament::build()
         optgroup->append_single_option_line("filament_abrasive");
 
         optgroup = page->new_optgroup(L("Print speed override"));
+        optgroup->append_single_option_line("filament_max_speed", "max-speed_127176");
         optgroup->append_single_option_line("filament_max_volumetric_speed", "max-volumetric-speed_127176");
 
         line = { "", "" };