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Feature: Ability to set flow ratio for brims (#11876)

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Fixes #11853

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Valerii Bokhan
2026-04-24 08:19:14 +02:00
committed by GitHub
parent 1eb9a8efbd
commit c30276ef24
9 changed files with 48 additions and 17 deletions
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2
src/libslic3r/GCode.cpp
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@@ -6285,6 +6285,8 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
_mm3_per_mm *= m_config.bottom_solid_infill_flow_ratio;
} else if (path.role() == erInternalBridgeInfill) {
_mm3_per_mm *= m_config.internal_bridge_flow;
} else if (path.role() == erBrim) {
_mm3_per_mm *= m_config.brim_flow_ratio;
} else if (sloped) {
_mm3_per_mm *= m_config.scarf_joint_flow_ratio;
}

2
src/libslic3r/Preset.cpp
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@@ -904,7 +904,7 @@ static std::vector<std::string> s_Preset_print_options {
"top_surface_speed", "support_speed", "support_object_xy_distance", "support_object_first_layer_gap", "support_interface_speed",
"bridge_speed", "internal_bridge_speed", "gap_infill_speed", "travel_speed", "travel_speed_z", "initial_layer_speed",
"outer_wall_acceleration", "initial_layer_acceleration", "top_surface_acceleration", "default_acceleration", "skirt_type", "skirt_loops", "skirt_speed","min_skirt_length", "skirt_distance", "skirt_start_angle", "skirt_height","single_loop_draft_shield", "draft_shield",
"brim_width", "brim_object_gap", "brim_use_efc_outline", "combine_brims", "brim_type", "brim_ears_max_angle", "brim_ears_detection_length", "enable_support", "support_type", "support_threshold_angle", "support_threshold_overlap","enforce_support_layers",
"brim_width", "brim_object_gap", "brim_flow_ratio", "brim_use_efc_outline", "combine_brims", "brim_type", "brim_ears_max_angle", "brim_ears_detection_length", "enable_support", "support_type", "support_threshold_angle", "support_threshold_overlap","enforce_support_layers",
"raft_layers", "raft_first_layer_density", "raft_first_layer_expansion", "raft_contact_distance", "raft_expansion",
"support_base_pattern", "support_base_pattern_spacing", "support_expansion", "support_style",
// BBS

11
src/libslic3r/PrintConfig.cpp
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@@ -1583,6 +1583,17 @@ void PrintConfigDef::init_fff_params()
def->mode = comAdvanced;
def->set_default_value(new ConfigOptionFloat(0.));
def = this->add("brim_flow_ratio", coFloat);
def->label = L("Brim flow ratio");
def->category = L("Support");
def->tooltip = L("This factor affects the amount of material for brims.\n\n"
"The actual brim flow used is calculated by multiplying this value by the filament flow ratio, and if set, the object's flow ratio.\n\n"
"Note: The resulting value will not be affected by the first-layer flow ratio.");
def->min = 0;
def->max = 2;
def->mode = comAdvanced;
def->set_default_value(new ConfigOptionFloat(1));
def = this->add("brim_use_efc_outline", coBool);
def->label = L("Brim follows compensated outline");
def->category = L("Support");

1
src/libslic3r/PrintConfig.hpp
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@@ -888,6 +888,7 @@ PRINT_CONFIG_CLASS_DEFINE(
PrintObjectConfig,
((ConfigOptionFloat, brim_object_gap))
((ConfigOptionFloat, brim_flow_ratio))
((ConfigOptionBool, brim_use_efc_outline))
((ConfigOptionEnum<BrimType>, brim_type))
((ConfigOptionFloat, brim_width))

20
src/libslic3r/PrintObject.cpp
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@@ -1300,7 +1300,6 @@ bool PrintObject::invalidate_state_by_config_options(
|| opt_key == "scarf_angle_threshold"
|| opt_key == "scarf_overhang_threshold"
|| opt_key == "scarf_joint_speed"
|| opt_key == "scarf_joint_flow_ratio"
|| opt_key == "seam_slope_start_height"
|| opt_key == "seam_slope_entire_loop"
|| opt_key == "seam_slope_min_length"
@@ -1324,7 +1323,24 @@ bool PrintObject::invalidate_state_by_config_options(
|| opt_key == "bed_mesh_min"
|| opt_key == "bed_mesh_max"
|| opt_key == "adaptive_bed_mesh_margin"
|| opt_key == "bed_mesh_probe_distance") {
|| opt_key == "bed_mesh_probe_distance"
|| opt_key == "print_flow_ratio"
|| opt_key == "first_layer_flow_ratio"
|| opt_key == "top_solid_infill_flow_ratio"
|| opt_key == "bottom_solid_infill_flow_ratio"
|| opt_key == "outer_wall_flow_ratio"
|| opt_key == "inner_wall_flow_ratio"
|| opt_key == "overhang_flow_ratio"
|| opt_key == "sparse_infill_flow_ratio"
|| opt_key == "internal_solid_infill_flow_ratio"
|| opt_key == "gap_fill_flow_ratio"
|| opt_key == "support_flow_ratio"
|| opt_key == "support_interface_flow_ratio"
|| opt_key == "brim_flow_ratio"
|| opt_key == "filament_flow_ratio"
|| opt_key == "scarf_joint_flow_ratio"
|| opt_key == "spiral_starting_flow_ratio"
|| opt_key == "spiral_finishing_flow_ratio") {
invalidated |= m_print->invalidate_step(psGCodeExport);
} else if (
opt_key == "flush_into_infill"