diff --git a/resources/definitions/ultimaker_s8.def.json b/resources/definitions/ultimaker_s8.def.json
index d3744c9aff1..c84336a96ed 100644
--- a/resources/definitions/ultimaker_s8.def.json
+++ b/resources/definitions/ultimaker_s8.def.json
@@ -455,16 +455,9 @@
         "seam_overhang_angle": { "value": 35 },
         "skin_material_flow": { "value": 93 },
         "skin_outline_count": { "value": 0 },
-        "skin_overlap": { "value": 20 },
-        "skin_preshrink": { "value": 0 },
+        "skin_support_speed": { "value": "speed_infill * infill_material_flow / skin_support_material_flow" },
         "skirt_brim_minimal_length": { "value": 1000 },
-        "skirt_brim_speed":
-        {
-            "maximum_value_warning": 300,
-            "value": "speed_layer_0"
-        },
         "skirt_line_count": { "value": 5 },
-        "small_skin_on_surface": { "value": false },
         "small_skin_width": { "value": 4 },
         "speed_flooring":
         {
diff --git a/resources/variants/ultimaker_s6_aa025.inst.cfg b/resources/variants/ultimaker_s6_aa025.inst.cfg
index b343f11c2c9..72435684fe8 100644
--- a/resources/variants/ultimaker_s6_aa025.inst.cfg
+++ b/resources/variants/ultimaker_s6_aa025.inst.cfg
@@ -117,12 +117,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s6_aa04.inst.cfg b/resources/variants/ultimaker_s6_aa04.inst.cfg
index c09ff1cf251..87658fa0f6c 100644
--- a/resources/variants/ultimaker_s6_aa04.inst.cfg
+++ b/resources/variants/ultimaker_s6_aa04.inst.cfg
@@ -116,12 +116,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s6_aa08.inst.cfg b/resources/variants/ultimaker_s6_aa08.inst.cfg
index ee5cd320d35..11dea4b358b 100644
--- a/resources/variants/ultimaker_s6_aa08.inst.cfg
+++ b/resources/variants/ultimaker_s6_aa08.inst.cfg
@@ -127,12 +127,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s6_cc04.inst.cfg b/resources/variants/ultimaker_s6_cc04.inst.cfg
index 8474b14bf03..6e310b80a21 100644
--- a/resources/variants/ultimaker_s6_cc04.inst.cfg
+++ b/resources/variants/ultimaker_s6_cc04.inst.cfg
@@ -116,12 +116,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s6_cc06.inst.cfg b/resources/variants/ultimaker_s6_cc06.inst.cfg
index 50ba28b788b..e53d5856702 100644
--- a/resources/variants/ultimaker_s6_cc06.inst.cfg
+++ b/resources/variants/ultimaker_s6_cc06.inst.cfg
@@ -116,12 +116,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s8_aa025.inst.cfg b/resources/variants/ultimaker_s8_aa025.inst.cfg
index 1b6ead480e3..bd393b4cf54 100644
--- a/resources/variants/ultimaker_s8_aa025.inst.cfg
+++ b/resources/variants/ultimaker_s8_aa025.inst.cfg
@@ -117,12 +117,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s8_aa04.inst.cfg b/resources/variants/ultimaker_s8_aa04.inst.cfg
index 94e411aa20e..76f7c601ea5 100644
--- a/resources/variants/ultimaker_s8_aa04.inst.cfg
+++ b/resources/variants/ultimaker_s8_aa04.inst.cfg
@@ -116,12 +116,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s8_aa08.inst.cfg b/resources/variants/ultimaker_s8_aa08.inst.cfg
index 4f403d77e5e..eb2d66bea8a 100644
--- a/resources/variants/ultimaker_s8_aa08.inst.cfg
+++ b/resources/variants/ultimaker_s8_aa08.inst.cfg
@@ -127,12 +127,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s8_cc04.inst.cfg b/resources/variants/ultimaker_s8_cc04.inst.cfg
index fc93603f85b..d3cdf103d7c 100644
--- a/resources/variants/ultimaker_s8_cc04.inst.cfg
+++ b/resources/variants/ultimaker_s8_cc04.inst.cfg
@@ -116,12 +116,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print
diff --git a/resources/variants/ultimaker_s8_cc06.inst.cfg b/resources/variants/ultimaker_s8_cc06.inst.cfg
index 874227e9b86..22f1f28daf9 100644
--- a/resources/variants/ultimaker_s8_cc06.inst.cfg
+++ b/resources/variants/ultimaker_s8_cc06.inst.cfg
@@ -116,12 +116,9 @@ roofing_pattern = =top_bottom_pattern
 seam_overhang_angle = =support_angle
 skin_material_flow = =0.95 * material_flow
 skin_outline_count = =0 if top_bottom_pattern == 'concentric' and top_bottom_pattern_0 == 'concentric' and roofing_layer_count <= 0 else 1
-skin_overlap = 20
-skin_preshrink = =wall_line_width_0 + (wall_line_count - 1) * wall_line_width_x
+skin_support_speed = =bridge_skin_speed
 skirt_brim_minimal_length = 250
-skirt_brim_speed = =speed_layer_0
 skirt_line_count = 1
-small_skin_on_surface = False
 small_skin_width = =skin_line_width * 2
 speed_flooring = =speed_topbottom
 speed_infill = =speed_print