Merge pull request #10860 from Ultimaker/PP-25_close-to-100%-density-infill-behaviour-Arachne

Pp 25 close to 100% density infill behaviour arachne

resources/definitions/ultimaker.def.json

@@ -61,6 +61,12 @@
         },
         "meshfix_maximum_extrusion_area_deviation": {
             "value": "50000"
+        },
+        "top_layers": {
+            "value": "math.ceil(round(top_thickness / resolveOrValue('layer_height'), 4))"
+        },
+        "bottom_layers": {
+            "value": "math.ceil(round(bottom_thickness / resolveOrValue('layer_height'), 4))"
         }
     }
 }

resources/definitions/ultimaker2_plus_connect.def.json

@@ -55,7 +55,7 @@
         },
         "infill_wipe_dist": { "value": "0" },
         "infill_overlap": { "value": "0" },
-        "infill_pattern": { "value": "'grid'" },
+        "infill_pattern": { "value": "'zigzag' if infill_sparse_density > 80 else 'grid'" },
         "speed_infill": { "value": "speed_print" },
         "speed_wall_x": { "value": "speed_wall" },
         "layer_height_0": { "value": "round(machine_nozzle_size / 1.5, 2)" },

resources/definitions/ultimaker3.def.json

@@ -97,7 +97,7 @@
         "cool_fan_speed_max": { "value": "100" },
         "cool_min_speed": { "value": "5" },
         "infill_overlap": { "value": "0" },
-        "infill_pattern": { "value": "'triangles'" },
+        "infill_pattern": { "value": "'zigzag' if infill_sparse_density > 80 else 'triangles'" },
         "infill_wipe_dist": { "value": "0" },
         "initial_layer_line_width_factor": { "value": "120" },
         "jerk_enabled": { "value": "True" },

resources/definitions/ultimaker_s3.def.json

@@ -90,7 +90,7 @@
         "cool_fan_speed_max": { "value": "100" },
         "cool_min_speed": { "value": "5" },
         "infill_overlap": { "value": "0" },
-        "infill_pattern": { "value": "'triangles'" },
+        "infill_pattern": { "value": "'zigzag' if infill_sparse_density > 80 else 'triangles'" },
         "infill_wipe_dist": { "value": "0" },
         "jerk_enabled": { "value": "True" },
         "jerk_print": { "value": "20", "minimum_value_warning": 20 },

resources/definitions/ultimaker_s5.def.json

@@ -92,7 +92,7 @@
         "cool_fan_speed_max": { "value": "100" },
         "cool_min_speed": { "value": "5" },
         "infill_overlap": { "value": "0" },
-        "infill_pattern": { "value": "'triangles'" },
+        "infill_pattern": { "value": "'zigzag' if infill_sparse_density > 80 else 'triangles'" },
         "infill_wipe_dist": { "value": "0" },
         "jerk_enabled": { "value": "True" },
         "jerk_print": { "value": "20", "minimum_value_warning": 20 },

resources/quality/ultimaker2_plus/um2p_cpep_0.4_draft.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 30
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus/um2p_cpep_0.4_normal.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 30
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus/um2p_cpep_0.6_draft.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 45
 cool_fan_speed_min = =cool_fan_speed * 25 / 45
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 35
 layer_0_z_overlap = 0.22
 

resources/quality/ultimaker2_plus/um2p_cpep_0.6_normal.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 45
 cool_fan_speed_min = =cool_fan_speed * 25 / 45
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 35
 layer_0_z_overlap = 0.22
 

resources/quality/ultimaker2_plus/um2p_cpep_0.8_draft.inst.cfg

@@ -17,7 +17,7 @@ brim_line_count = 10
 cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 40
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus/um2p_cpep_0.8_normal.inst.cfg

@@ -17,7 +17,7 @@ brim_line_count = 10
 cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 40
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus/um2p_nylon_0.25_high.inst.cfg

@@ -17,7 +17,7 @@ brim_line_count = 8
 cool_fan_speed = 60
 cool_fan_speed_min = =cool_fan_speed * 35 / 60
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 25
 layer_0_z_overlap = 0.1
 raft_airgap = 0.15

resources/quality/ultimaker2_plus/um2p_nylon_0.25_normal.inst.cfg

@@ -17,7 +17,7 @@ brim_line_count = 8
 cool_fan_speed = 60
 cool_fan_speed_min = =cool_fan_speed * 35 / 60
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 25
 layer_0_z_overlap = 0.1
 raft_airgap = 0.15

resources/quality/ultimaker2_plus/um2p_nylon_0.4_fast.inst.cfg

@@ -16,7 +16,7 @@ adhesion_type = raft
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_layer_time = 3
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 30
 layer_0_z_overlap = 0.22
 raft_airgap = 0.57

resources/quality/ultimaker2_plus/um2p_nylon_0.4_normal.inst.cfg

@@ -16,7 +16,7 @@ adhesion_type = raft
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_layer_time = 3
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 30
 layer_0_z_overlap = 0.22
 raft_airgap = 0.57

resources/quality/ultimaker2_plus/um2p_nylon_0.6_fast.inst.cfg

@@ -16,7 +16,7 @@ adhesion_type = raft
 brim_line_count = 8
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 35
 layer_0_z_overlap = 0.22
 raft_airgap = 0.44

resources/quality/ultimaker2_plus/um2p_nylon_0.6_normal.inst.cfg

@@ -16,7 +16,7 @@ adhesion_type = raft
 brim_line_count = 8
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 35
 layer_0_z_overlap = 0.22
 raft_airgap = 0.44

resources/quality/ultimaker2_plus/um2p_nylon_0.8_draft.inst.cfg

@@ -16,7 +16,7 @@ adhesion_type = raft
 brim_line_count = 8
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 40
 layer_0_z_overlap = 0.25
 raft_airgap = 0.44

resources/quality/ultimaker2_plus/um2p_nylon_0.8_normal.inst.cfg

@@ -16,7 +16,7 @@ adhesion_type = raft
 brim_line_count = 8
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 40
 layer_0_z_overlap = 0.25
 raft_airgap = 0.44

resources/quality/ultimaker2_plus/um2p_pc_0.25_high.inst.cfg

@@ -18,7 +18,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 2
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 25
 layer_0_z_overlap = 0.2
 raft_airgap = 0.25

resources/quality/ultimaker2_plus/um2p_pc_0.25_normal.inst.cfg

@@ -18,7 +18,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 2
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 25
 layer_0_z_overlap = 0.2
 raft_airgap = 0.25

resources/quality/ultimaker2_plus/um2p_pc_0.4_fast.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 30
 layer_0_z_overlap = 0.3
 raft_airgap = 0.35

resources/quality/ultimaker2_plus/um2p_pc_0.4_normal.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 30
 layer_0_z_overlap = 0.3
 raft_airgap = 0.35

resources/quality/ultimaker2_plus/um2p_pc_0.6_fast.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 35
 layer_0_z_overlap = 0.22
 raft_airgap = 0.52

resources/quality/ultimaker2_plus/um2p_pc_0.6_normal.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 35
 layer_0_z_overlap = 0.22
 raft_airgap = 0.52

resources/quality/ultimaker2_plus/um2p_pc_0.8_draft.inst.cfg

@@ -17,7 +17,7 @@ brim_line_count = 10
 cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 40
 layer_0_z_overlap = 0.22
 raft_airgap = 0.47

resources/quality/ultimaker2_plus/um2p_pc_0.8_normal.inst.cfg

@@ -17,7 +17,7 @@ brim_line_count = 10
 cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 40
 layer_0_z_overlap = 0.22
 raft_airgap = 0.47

resources/quality/ultimaker2_plus/um2p_pp_0.4_fast.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus/um2p_pp_0.4_normal.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus/um2p_pp_0.6_draft.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus/um2p_pp_0.6_fast.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus/um2p_pp_0.8_draft.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus/um2p_pp_0.8_verydraft.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus_connect/um2pc_cpep_0.4_draft.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus_connect/um2pc_cpep_0.4_normal.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus_connect/um2pc_cpep_0.6_draft.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_speed = 45
 cool_fan_speed_min = =cool_fan_speed * 25 / 45
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus_connect/um2pc_cpep_0.6_normal.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_speed = 45
 cool_fan_speed_min = =cool_fan_speed * 25 / 45
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus_connect/um2pc_cpep_0.8_draft.inst.cfg

@@ -16,7 +16,7 @@ brim_line_count = 10
 cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus_connect/um2pc_cpep_0.8_normal.inst.cfg

@@ -16,7 +16,7 @@ brim_line_count = 10
 cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.37

resources/quality/ultimaker2_plus_connect/um2pc_nylon_0.25_high.inst.cfg

@@ -16,7 +16,7 @@ brim_line_count = 8
 cool_fan_speed = 60
 cool_fan_speed_min = =cool_fan_speed * 35 / 60
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.1
 raft_airgap = 0.15

resources/quality/ultimaker2_plus_connect/um2pc_nylon_0.25_normal.inst.cfg

@@ -16,7 +16,7 @@ brim_line_count = 8
 cool_fan_speed = 60
 cool_fan_speed_min = =cool_fan_speed * 35 / 60
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.1
 raft_airgap = 0.15

resources/quality/ultimaker2_plus_connect/um2pc_nylon_0.4_fast.inst.cfg

@@ -15,7 +15,7 @@ variant = 0.4 mm
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_layer_time = 3
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.57

resources/quality/ultimaker2_plus_connect/um2pc_nylon_0.4_normal.inst.cfg

@@ -15,7 +15,7 @@ variant = 0.4 mm
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_layer_time = 3
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.57

resources/quality/ultimaker2_plus_connect/um2pc_nylon_0.6_fast.inst.cfg

@@ -15,7 +15,7 @@ variant = 0.6 mm
 brim_line_count = 8
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.44

resources/quality/ultimaker2_plus_connect/um2pc_nylon_0.6_normal.inst.cfg

@@ -15,7 +15,7 @@ variant = 0.6 mm
 brim_line_count = 8
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.44

resources/quality/ultimaker2_plus_connect/um2pc_nylon_0.8_draft.inst.cfg

@@ -15,7 +15,7 @@ variant = 0.8 mm
 brim_line_count = 8
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.25
 raft_airgap = 0.44

resources/quality/ultimaker2_plus_connect/um2pc_nylon_0.8_normal.inst.cfg

@@ -15,7 +15,7 @@ variant = 0.8 mm
 brim_line_count = 8
 cool_fan_speed_min = =cool_fan_speed * 0.35
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.25
 raft_airgap = 0.44

resources/quality/ultimaker2_plus_connect/um2pc_pc_0.25_high.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 2
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.2
 raft_airgap = 0.25

resources/quality/ultimaker2_plus_connect/um2pc_pc_0.25_normal.inst.cfg

@@ -17,7 +17,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 2
 cool_min_speed = 15
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.2
 raft_airgap = 0.25

resources/quality/ultimaker2_plus_connect/um2pc_pc_0.4_fast.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.3
 raft_airgap = 0.35

resources/quality/ultimaker2_plus_connect/um2pc_pc_0.4_normal.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.3
 raft_airgap = 0.35

resources/quality/ultimaker2_plus_connect/um2pc_pc_0.6_fast.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.52

resources/quality/ultimaker2_plus_connect/um2pc_pc_0.6_normal.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_speed = 50
 cool_fan_speed_min = 0
 cool_min_layer_time = 3
 cool_min_speed = 8
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.52

resources/quality/ultimaker2_plus_connect/um2pc_pc_0.8_normal.inst.cfg

@@ -16,7 +16,7 @@ brim_line_count = 10
 cool_fan_speed = 50
 cool_fan_speed_min = =cool_fan_speed * 25 / 50
 cool_min_layer_time = 3
-infill_overlap = 5
+infill_overlap = =0 if infill_sparse_density > 80 else 5
 infill_sparse_density = 20
 layer_0_z_overlap = 0.22
 raft_airgap = 0.47

resources/quality/ultimaker2_plus_connect/um2pc_pp_0.4_fast.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus_connect/um2pc_pp_0.4_normal.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus_connect/um2pc_pp_0.6_draft.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus_connect/um2pc_pp_0.6_fast.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus_connect/um2pc_pp_0.8_draft.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker2_plus_connect/um2pc_pp_0.8_verydraft.inst.cfg

@@ -27,7 +27,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 20
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_layer_0 = =jerk_topbottom

resources/quality/ultimaker3/um3_aa0.25_ABS_Normal_Quality.inst.cfg

@@ -13,7 +13,7 @@ variant = AA 0.25
 
 [values]
 cool_fan_speed = 40
-infill_overlap = 15
+infill_overlap = =0 if infill_sparse_density > 80 else 15
 material_final_print_temperature = =material_print_temperature - 5
 retraction_prime_speed = 25
 speed_topbottom = =math.ceil(speed_print * 30 / 55)

resources/quality/ultimaker3/um3_aa0.25_PC_Normal_Quality.inst.cfg

@@ -19,7 +19,7 @@ cool_fan_full_at_height = =layer_height_0 + layer_height
 cool_fan_speed_max = 50
 cool_min_layer_time_fan_speed_max = 5
 cool_min_speed = 5
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.25_PLA_Normal_Quality.inst.cfg

@@ -15,8 +15,8 @@ variant = AA 0.25
 brim_width = 8
 cool_fan_full_at_height = =layer_height_0
 cool_min_speed = 10
-infill_overlap = 10
-infill_pattern = grid
+infill_overlap = =0 if infill_sparse_density > 80 else 10
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'grid'
 machine_nozzle_cool_down_speed = 0.9
 machine_nozzle_heat_up_speed = 1.4
 material_final_print_temperature = =max(-273.15, material_print_temperature - 15)

resources/quality/ultimaker3/um3_aa0.25_PP_Normal_Quality.inst.cfg

@@ -18,7 +18,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 5
 cool_min_speed = 2.5
 
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.25_TPLA_Normal_Quality.inst.cfg

@@ -15,8 +15,8 @@ variant = AA 0.25
 brim_width = 8
 cool_fan_full_at_height = =layer_height_0
 cool_min_speed = 7
-infill_overlap = 10
-infill_pattern = grid
+infill_overlap = =0 if infill_sparse_density > 80 else 10
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'grid'
 machine_nozzle_cool_down_speed = 0.9
 machine_nozzle_heat_up_speed = 1.4
 material_final_print_temperature = =max(-273.15, material_print_temperature - 15)

resources/quality/ultimaker3/um3_aa0.4_CPEP_Draft_Print.inst.cfg

@@ -15,7 +15,7 @@ variant = AA 0.4
 cool_fan_speed_max = 80
 cool_min_speed = 5
 infill_overlap = 0
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_CPEP_Fast_Print.inst.cfg

@@ -15,7 +15,7 @@ variant = AA 0.4
 cool_fan_speed_max = 80
 cool_min_speed = 6
 infill_overlap = 0
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_CPEP_High_Quality.inst.cfg

@@ -15,7 +15,7 @@ variant = AA 0.4
 cool_fan_speed_max = 50
 cool_min_speed = 5
 infill_overlap = 0
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_CPEP_Normal_Quality.inst.cfg

@@ -15,7 +15,7 @@ variant = AA 0.4
 cool_fan_speed_max = 50
 cool_min_speed = 7
 infill_overlap = 0
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_PC_Draft_Print.inst.cfg

@@ -20,8 +20,8 @@ cool_min_layer_time_fan_speed_max = 5
 cool_min_speed = 6
 
 infill_overlap = 0
-infill_overlap_mm = 0.05
-infill_pattern = triangles
+infill_overlap_mm = =0 if infill_sparse_density > 80 else 0.05
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_PC_Fast_Print.inst.cfg

@@ -19,8 +19,8 @@ cool_fan_speed_max = 85
 cool_min_layer_time_fan_speed_max = 5
 cool_min_speed = 7
 
-infill_overlap_mm = 0.05
-infill_pattern = triangles
+infill_overlap_mm = =0 if infill_sparse_density > 80 else 0.05
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_PC_High_Quality.inst.cfg

@@ -20,8 +20,8 @@ cool_min_layer_time_fan_speed_max = 5
 cool_min_speed = 8
 
 infill_overlap = 0
-infill_overlap_mm = 0.05
-infill_pattern = triangles
+infill_overlap_mm = =0 if infill_sparse_density > 80 else 0.05
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_PC_Normal_Quality.inst.cfg

@@ -20,7 +20,7 @@ cool_min_layer_time_fan_speed_max = 5
 cool_min_speed = 5
 
 infill_overlap = 0
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_PP_Draft_Print.inst.cfg

@@ -19,7 +19,7 @@ cool_min_layer_time_fan_speed_max = 7
 cool_min_speed = 2.5
 
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_PP_Fast_Print.inst.cfg

@@ -19,7 +19,7 @@ cool_min_layer_time_fan_speed_max = 7
 cool_min_speed = 2.5
 
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_PP_Normal_Quality.inst.cfg

@@ -19,7 +19,7 @@ cool_min_layer_time_fan_speed_max = 7
 cool_min_speed = 2.5
 
 infill_overlap = 0
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker3/um3_aa0.4_TPU_Draft_Print.inst.cfg

@@ -19,7 +19,7 @@ cool_min_speed = 4
 gradual_infill_step_height = =5 * layer_height
 
 infill_overlap = 0
-infill_pattern = cross_3d
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cross_3d'
 infill_sparse_density = 10
 infill_wipe_dist = 0.1
 jerk_enabled = True

resources/quality/ultimaker3/um3_aa0.4_TPU_Fast_Print.inst.cfg

@@ -19,7 +19,7 @@ cool_min_speed = 4
 gradual_infill_step_height = =5 * layer_height
 
 infill_overlap = 0
-infill_pattern = cross_3d
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cross_3d'
 infill_sparse_density = 10
 infill_wipe_dist = 0.1
 jerk_enabled = True

resources/quality/ultimaker3/um3_aa0.4_TPU_Normal_Quality.inst.cfg

@@ -19,7 +19,7 @@ cool_min_speed = 4
 gradual_infill_step_height = =5 * layer_height
 
 infill_overlap = 0
-infill_pattern = cross_3d
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cross_3d'
 infill_sparse_density = 10
 infill_wipe_dist = 0.1
 jerk_enabled = True

resources/quality/ultimaker3/um3_aa0.8_PLA_Draft_Print.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_full_at_height = =layer_height_0 + 2 * layer_height
 cool_fan_speed_max = =100
 cool_min_speed = 2
 gradual_infill_step_height = =3 * layer_height
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 machine_nozzle_cool_down_speed = 0.75
 machine_nozzle_heat_up_speed = 1.6
 material_final_print_temperature = =max(-273.15, material_print_temperature - 15)

resources/quality/ultimaker3/um3_aa0.8_PLA_Superdraft_Print.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_full_at_height = =layer_height_0 + 2 * layer_height
 cool_fan_speed_max = =100
 cool_min_speed = 2
 gradual_infill_step_height = =3 * layer_height
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 layer_height = 0.4
 machine_nozzle_cool_down_speed = 0.75
 machine_nozzle_heat_up_speed = 1.6

resources/quality/ultimaker3/um3_aa0.8_PLA_Verydraft_Print.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_full_at_height = =layer_height_0 + 2 * layer_height
 cool_fan_speed_max = =100
 cool_min_speed = 2
 gradual_infill_step_height = =3 * layer_height
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 layer_height = 0.3
 machine_nozzle_cool_down_speed = 0.75
 machine_nozzle_heat_up_speed = 1.6

resources/quality/ultimaker3/um3_aa0.8_PP_Draft_Print.inst.cfg

@@ -16,7 +16,7 @@ brim_width = 25
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 17
 top_skin_expand_distance = =line_width * 2
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 material_bed_temperature_layer_0 = =material_bed_temperature
 material_print_temperature = =default_material_print_temperature - 2
 material_print_temperature_layer_0 = =default_material_print_temperature + 2

resources/quality/ultimaker3/um3_aa0.8_PP_Superdraft_Print.inst.cfg

@@ -16,7 +16,7 @@ brim_width = 25
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 17
 top_skin_expand_distance = =line_width * 2
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 material_bed_temperature_layer_0 = =material_bed_temperature
 material_print_temperature = =default_material_print_temperature + 2
 material_print_temperature_layer_0 = =default_material_print_temperature + 2

resources/quality/ultimaker3/um3_aa0.8_PP_Verydraft_Print.inst.cfg

@@ -16,7 +16,7 @@ brim_width = 25
 cool_min_layer_time_fan_speed_max = 6
 cool_min_speed = 17
 top_skin_expand_distance = =line_width * 2
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 layer_height = 0.3
 material_bed_temperature_layer_0 = =material_bed_temperature
 material_print_temperature_layer_0 = =default_material_print_temperature + 2

resources/quality/ultimaker3/um3_aa0.8_TPLA_Draft_Print.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_full_at_height = =layer_height_0 + 2 * layer_height
 cool_fan_speed_max = =100
 cool_min_speed = 2
 gradual_infill_step_height = =3 * layer_height
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 layer_height_0 = 0.4
 machine_nozzle_cool_down_speed = 0.75
 machine_nozzle_heat_up_speed = 1.6

resources/quality/ultimaker3/um3_aa0.8_TPLA_Superdraft_Print.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_full_at_height = =layer_height_0 + 2 * layer_height
 cool_fan_speed_max = =100
 cool_min_speed = 2
 gradual_infill_step_height = =3 * layer_height
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 layer_height_0 = 0.4
 machine_nozzle_cool_down_speed = 0.75
 machine_nozzle_heat_up_speed = 1.6

resources/quality/ultimaker3/um3_aa0.8_TPLA_Verydraft_Print.inst.cfg

@@ -16,7 +16,7 @@ cool_fan_full_at_height = =layer_height_0 + 2 * layer_height
 cool_fan_speed_max = =100
 cool_min_speed = 2
 gradual_infill_step_height = =3 * layer_height
-infill_pattern = cubic
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cubic'
 layer_height_0 = 0.4
 machine_nozzle_cool_down_speed = 0.75
 machine_nozzle_heat_up_speed = 1.6

resources/quality/ultimaker3/um3_aa0.8_TPU_Draft_Print.inst.cfg

@@ -16,7 +16,7 @@ brim_width = 8.75
 cool_min_layer_time_fan_speed_max = 6
 top_skin_expand_distance = =line_width * 2
 gradual_infill_step_height = =4 * layer_height
-infill_pattern = cross_3d
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cross_3d'
 infill_sparse_density = 10
 machine_nozzle_cool_down_speed = 0.5
 machine_nozzle_heat_up_speed = 2.5

resources/quality/ultimaker3/um3_aa0.8_TPU_Superdraft_Print.inst.cfg

@@ -16,7 +16,7 @@ brim_width = 8.75
 cool_min_layer_time_fan_speed_max = 6
 top_skin_expand_distance = =line_width * 2
 gradual_infill_step_height = =4 * layer_height
-infill_pattern = cross_3d
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cross_3d'
 infill_sparse_density = 10
 layer_height = 0.4
 machine_nozzle_cool_down_speed = 0.5

resources/quality/ultimaker3/um3_aa0.8_TPU_Verydraft_Print.inst.cfg

@@ -16,7 +16,7 @@ brim_width = 8.75
 cool_min_layer_time_fan_speed_max = 6
 top_skin_expand_distance = =line_width * 2
 gradual_infill_step_height = =4 * layer_height
-infill_pattern = cross_3d
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'cross_3d'
 infill_sparse_density = 10
 layer_height = 0.3
 machine_nozzle_cool_down_speed = 0.5

resources/quality/ultimaker_s3/um_s3_aa0.25_ABS_Normal_Quality.inst.cfg

@@ -13,7 +13,7 @@ variant = AA 0.25
 
 [values]
 cool_fan_speed = 40
-infill_overlap = 15
+infill_overlap = =0 if infill_sparse_density > 80 else 15
 material_final_print_temperature = =material_print_temperature - 5
 retraction_prime_speed = 25
 speed_topbottom = =math.ceil(speed_print * 30 / 55)

resources/quality/ultimaker_s3/um_s3_aa0.25_PC_Normal_Quality.inst.cfg

@@ -19,7 +19,7 @@ cool_fan_full_at_height = =layer_height_0 + layer_height
 cool_fan_speed_max = 50
 cool_min_layer_time_fan_speed_max = 5
 cool_min_speed = 5
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker_s3/um_s3_aa0.25_PLA_Normal_Quality.inst.cfg

@@ -15,8 +15,8 @@ variant = AA 0.25
 brim_width = 8
 cool_fan_full_at_height = =layer_height_0
 cool_min_speed = 10
-infill_overlap = 10
-infill_pattern = grid
+infill_overlap = =0 if infill_sparse_density > 80 else 10
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'grid'
 machine_nozzle_cool_down_speed = 0.9
 machine_nozzle_heat_up_speed = 1.4
 material_final_print_temperature = =max(-273.15, material_print_temperature - 15)

resources/quality/ultimaker_s3/um_s3_aa0.25_PP_Normal_Quality.inst.cfg

@@ -18,7 +18,7 @@ cool_fan_speed_max = 100
 cool_min_layer_time_fan_speed_max = 5
 cool_min_speed = 2.5
 
-infill_pattern = tetrahedral
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'tetrahedral'
 infill_wipe_dist = 0.1
 jerk_enabled = True
 jerk_print = 25

resources/quality/ultimaker_s3/um_s3_aa0.25_TPLA_Normal_Quality.inst.cfg

@@ -16,8 +16,8 @@ brim_width = 8
 cool_fan_full_at_height = =layer_height_0
 cool_min_speed = 7
 
-infill_overlap = 10
-infill_pattern = grid
+infill_overlap = =0 if infill_sparse_density > 80 else 10
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'grid'
 machine_nozzle_cool_down_speed = 0.9
 machine_nozzle_heat_up_speed = 1.4
 material_final_print_temperature = =max(-273.15, material_print_temperature - 15)

resources/quality/ultimaker_s3/um_s3_aa0.4_CPE_Draft_Print.inst.cfg

@@ -25,5 +25,5 @@ speed_wall_0 = =math.ceil(speed_wall * 35 / 45)
 wall_thickness = 1
 
 
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 speed_infill = =math.ceil(speed_print * 50 / 60)

resources/quality/ultimaker_s3/um_s3_aa0.4_CPE_Fast_Print.inst.cfg

@@ -23,5 +23,5 @@ speed_topbottom = =math.ceil(speed_print * 30 / 60)
 speed_wall = =math.ceil(speed_print * 40 / 60)
 speed_wall_0 = =math.ceil(speed_wall * 30 / 40)
 
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 speed_infill = =math.ceil(speed_print * 50 / 60)

resources/quality/ultimaker_s3/um_s3_aa0.4_CPE_High_Quality.inst.cfg

@@ -24,5 +24,5 @@ speed_layer_0 = =math.ceil(speed_print * 20 / 50)
 speed_topbottom = =math.ceil(speed_print * 30 / 50)
 speed_wall = =math.ceil(speed_print * 30 / 50)
 
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 speed_infill = =math.ceil(speed_print * 40 / 50)

resources/quality/ultimaker_s3/um_s3_aa0.4_CPE_Normal_Quality.inst.cfg

@@ -22,5 +22,5 @@ speed_layer_0 = =math.ceil(speed_print * 20 / 55)
 speed_topbottom = =math.ceil(speed_print * 30 / 55)
 speed_wall = =math.ceil(speed_print * 30 / 55)
 
-infill_pattern = triangles
+infill_pattern = ='zigzag' if infill_sparse_density > 80 else 'triangles'
 speed_infill = =math.ceil(speed_print * 45 / 55)