diff --git a/notebook_nueva/model.stl b/notebook_nueva/model.stl
index c9be31e..6bf7d16 100644
Binary files a/notebook_nueva/model.stl and b/notebook_nueva/model.stl differ
diff --git a/notebook_nueva/modelo.py b/notebook_nueva/modelo.py
index e297a1f..c3b5ddb 100644
--- a/notebook_nueva/modelo.py
+++ b/notebook_nueva/modelo.py
@@ -5,6 +5,7 @@ import audio_plug
 import battery_holder
 import usb_hub
 import zero_holder as cpu_holder
+import screen_pillars
 from utils import extrude_shape, punch_hole, punch_hole2
 
 # Base for the notebook. Basically a kbd base that extends back
@@ -62,22 +63,14 @@ kbd_lower_pillars = (
 # parts of the case.
 # Measured from top-left corner OUTSIDE
 mounting_pillar_positions = [
-    (6, -6),
-    (6, -40),
-    (120, -6),
-    (170, -6),
-    (width - 6, -6),
-    (width - 6, -30),
+    (6, 6),
+    (6, 40),
+    (120, 6),
+    (170, 6),
+    (width - 6, 6),
+    (width - 6, 30),
 ]
-
-mounting_pillars = (
-    cq.Sketch()
-    .push(mounting_pillar_positions)
-    .trapezoid(12, 12, 90, mode="a")
-    .circle(1.8, mode="s")
-)
-
-screw_holes = cq.Sketch().push(mounting_pillar_positions).circle(3, mode="a")
+screen_pillars.init(mounting_pillar_positions, thickness - shell_t)
 
 # Thing to "grab" the hub so it stays in place
 # Distance from edge to center of USB plug
@@ -135,19 +128,6 @@ def model():
         # Slope for the beyboard
         .workplaneFromTagged("sloped")
         .split(keepBottom=True)
-        # Pillars to join with top half
-        .workplaneFromTagged("mid_height")
-        .workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
-        .center(-width / 2, height / 2)
-        .placeSketch(mounting_pillars)
-        .extrude(thickness)
-        # Holes to insert screws from the bottom
-        .workplaneFromTagged("mid_height")
-        .workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
-        .center(-width / 2, height / 2)
-        .placeSketch(screw_holes)
-        # 13 is 20-7 (screw thread length - threaded insert depth)
-        .cutBlind(thickness - 13)
     )
 
     # Now the basic box shape is in place, start adding things
@@ -203,6 +183,18 @@ def model():
         shell_t=shell_t,
     )
 
+    model = screen_pillars.add(
+        model=model,
+        width=width,
+        height=height,
+        thickness=thickness,
+        offset_x=0,
+        offset_y=0,
+        bottom_face="<Z",
+        back_face=None,
+        shell_t=shell_t,
+    )
+
     return model