Add setting for extra_infill_lines_to_support_skins

resources/definitions/fdmprinter.def.json

@@ -2326,7 +2326,7 @@
                     "label": "Skin Edge Support Thickness",
                     "description": "The thickness of the extra infill that supports skin edges.",
                     "unit": "mm",
-                    "default_value": 0.8,
+                    "default_value": 0,
                     "minimum_value": "0",
                     "maximum_value": "machine_height",
                     "maximum_value_warning": "resolveOrValue('infill_sparse_thickness') * 10",
@@ -2341,7 +2341,7 @@
                         {
                             "label": "Skin Edge Support Layers",
                             "description": "The number of infill layers that supports skin edges.",
-                            "default_value": 4,
+                            "default_value": 0,
                             "minimum_value": "0",
                             "maximum_value_warning": "10",
                             "type": "int",
@@ -2353,6 +2353,21 @@
                         }
                     }
                 },
+                "extra_infill_lines_to_support_skins":
+                {
+                    "label": "Extra Infill Lines To Support Skins",
+                    "description": "Add extra lines into the infill pattern to support skins above.   This option prevents holes or plastic blobs that sometime show in complex shaped skins due to the infill below not correctly supporting the skin layer being printed above.",
+                    "type": "enum",
+                    "options":
+                    {
+                        "walls_and_lines": "Walls and Lines",
+                        "walls": "Walls Only",
+                        "none": "None"
+                    },
+                    "default_value": "walls_and_lines",
+                    "value": "'none' if infill_sparse_density > 50 else 'walls' if skin_edge_support_thickness > 0 else 'walls_and_lines'",
+                    "enabled": "infill_sparse_density > 0"
+                },
                 "lightning_infill_support_angle":
                 {
                     "label": "Lightning Infill Support Angle",

resources/definitions/ultimaker.def.json

@@ -111,7 +111,6 @@
         "roofing_layer_count": { "value": "1" },
         "roofing_material_flow": { "value": "material_flow" },
         "skin_angles": { "value": "[] if infill_pattern not in ['cross', 'cross_3d'] else [20, 110]" },
-        "skin_edge_support_thickness": { "value": "4 * layer_height if infill_sparse_density < 30 else 0" },
         "skin_material_flow": { "value": "0.95 * material_flow" },
         "skin_material_flow_layer_0": { "value": "95" },
         "skin_monotonic": { "value": "roofing_layer_count == 0" },

resources/setting_visibility/expert.cfg

@@ -110,6 +110,7 @@ min_skin_width_for_expansion
 infill_randomize_start_location
 skin_edge_support_thickness
 skin_edge_support_layers
+extra_infill_lines_to_support_skins
 
 [material]
 default_material_print_temperature