diff --git a/notebook_nueva/audio_plug.py b/notebook_nueva/audio_plug.py
index 68e35d8..3402948 100644
--- a/notebook_nueva/audio_plug.py
+++ b/notebook_nueva/audio_plug.py
@@ -2,7 +2,7 @@
 
 import cadquery as cq
 
-from utils import punch_hole2, extrude_shape2
+from utils import punch_hole
 
 # The hole is for a random USB sound card.
 # Consumers should set proper offsets for the hole
@@ -33,7 +33,7 @@ def add(
     # Holes
     if back_face:
         for hole in holes:
-            model = punch_hole2(
+            model = punch_hole(
                 model=model,
                 face=back_face,
                 # FIXME: This is weird because it's the RIGHT side,
diff --git a/notebook_nueva/battery_holder.py b/notebook_nueva/battery_holder.py
index df3c6fb..bd5ffc2 100644
--- a/notebook_nueva/battery_holder.py
+++ b/notebook_nueva/battery_holder.py
@@ -1,6 +1,6 @@
 import cadquery as cq
 
-from utils import extrude_shape, punch_hole2, hex_vents
+from utils import extrude_shape, punch_hole, hex_vents
 
 stand_positions = [(3.5, 3.5), (61.5, 3.5), (61.5, 52.5), (3.5, 52.5)]
 stands = (
@@ -71,7 +71,7 @@ elements = [
 ]
 
 
-vents = hex_vents(size=6, width=width, height=height)
+vents = hex_vents(size=3, width=width, height=height)
 
 
 # Hole distances are relative to the rightmost pillar
@@ -110,7 +110,7 @@ def add(
     if bottom_face:
         # Vents
         for vent in vents:
-            model = punch_hole2(
+            model = punch_hole(
                 model=model,
                 face=bottom_face,
                 w=width,
@@ -128,16 +128,16 @@ def add(
                 face=bottom_face,
                 w=width,
                 h=height,
-                x_offset=offset_x + element["x"],
-                y_offset=shell_t + offset_y + element["y"],
-                shape=element["shape"],
+                x_offset=offset_x,
+                y_offset=shell_t + offset_y,
+                element=element,
                 height=-(element["height"] + shell_t),
             )
 
     if back_face:
         # Holes
         for hole in holes:
-            model = punch_hole2(
+            model = punch_hole(
                 model=model,
                 face=back_face,
                 w=width,
diff --git a/notebook_nueva/model.stl b/notebook_nueva/model.stl
index 203cc99..a09fbb9 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 47d9dbc..687c48a 100644
--- a/notebook_nueva/modelo.py
+++ b/notebook_nueva/modelo.py
@@ -7,7 +7,6 @@ import usb_hub
 import zero_holder as cpu_holder
 import screen_pillars
 import keyboard
-from utils import extrude_shape, punch_hole, punch_hole2
 
 # Base for the notebook. Basically a kbd base that extends back
 # as much as possible
diff --git a/notebook_nueva/screen_pillars.py b/notebook_nueva/screen_pillars.py
index bd519ff..4ab2fee 100644
--- a/notebook_nueva/screen_pillars.py
+++ b/notebook_nueva/screen_pillars.py
@@ -1,4 +1,4 @@
-from utils import extrude_shape, punch_hole2
+from utils import extrude_shape, punch_hole
 import cadquery as cq
 
 elements = None
@@ -52,20 +52,20 @@ def add(
                 face=bottom_face,
                 w=width,
                 h=height,
-                x_offset=offset_x + element["x"],
-                y_offset=shell_t + offset_y + element["y"],
-                shape=element["shape"],
+                x_offset=offset_x,
+                y_offset=shell_t + offset_y,
+                element=element,
                 height=-(element["height"] + shell_t),
             )
         # Screw holes
         for hole in bottom_holes:
-            model = punch_hole2(
+            model = punch_hole(
                 model=model,
                 face=bottom_face,
                 w=width,
                 h=height,
-                x_offset=offset_x + hole["x"],
-                y_offset=shell_t + offset_y + hole["y"],
+                x_offset=offset_x,
+                y_offset=shell_t + offset_y,
                 hole=hole,
                 depth=hole["depth"],
             )
diff --git a/notebook_nueva/usb_hub.py b/notebook_nueva/usb_hub.py
index 3e996df..4553d31 100644
--- a/notebook_nueva/usb_hub.py
+++ b/notebook_nueva/usb_hub.py
@@ -1,6 +1,6 @@
 import cadquery as cq
 
-from utils import punch_hole2, extrude_shape, extrude_shape2
+from utils import punch_hole, extrude_shape
 
 # Measurements for my USB hub, YMMV
 
@@ -54,16 +54,16 @@ def add(
                 face=bottom_face,
                 w=width,
                 h=height,
-                x_offset=offset_x + element["x"],
-                y_offset=shell_t + offset_y + element["y"],
-                shape=element["shape"],
+                x_offset=offset_x,
+                y_offset=shell_t + offset_y,
+                element=element,
                 height=-(element["height"] + shell_t),
             )
 
     # Holes
     if back_face:
         for hole in holes:
-            model = punch_hole2(
+            model = punch_hole(
                 model=model,
                 face=back_face,
                 w=width,
diff --git a/notebook_nueva/utils.py b/notebook_nueva/utils.py
index 29659ac..38e78fe 100644
--- a/notebook_nueva/utils.py
+++ b/notebook_nueva/utils.py
@@ -1,12 +1,13 @@
 import cadquery as cq
+from math import floor
 
-# TODO make API of extrude_shape and punch_hole more consistent
-def extrude_shape(*, model, face, w, h, x_offset, y_offset, shape, height):
+
+def extrude_shape(*, model, face, w, h, x_offset, y_offset, element, height):
     return (
         model.faces(face)
         .workplane(centerOption="CenterOfBoundBox")
-        .center(-w / 2 + x_offset, -h / 2 + y_offset)
-        .placeSketch(shape)
+        .center(-w / 2 + x_offset + element["x"], -h / 2 + y_offset + element["y"])
+        .placeSketch(element["shape"])
         .extrude(height)
     )
 
@@ -16,12 +17,7 @@ def punch_hole(*, model, face, w, h, x_offset, y_offset, hole, depth):
         model.faces(face)
         .workplane(centerOption="CenterOfBoundBox")
         .center(-w / 2 + x_offset + hole["x"], -h / 2 + y_offset + hole["y"])
-        .placeSketch(
-            cq.Sketch()
-            .trapezoid(hole["width"], hole["height"], 90, mode="a")
-            .vertices()
-            .fillet(hole["fillet"])
-        )
+        .placeSketch(hole["shape"])
         .cutBlind(-depth)
     )
 
@@ -36,31 +32,41 @@ def extrude_shape2(*, model, face, w, h, x_offset, y_offset, hole, depth):
     )
 
 
-def punch_hole2(*, model, face, w, h, x_offset, y_offset, hole, depth):
-    return (
-        model.faces(face)
-        .workplane(centerOption="CenterOfBoundBox")
-        .center(-w / 2 + x_offset + hole["x"], -h / 2 + y_offset + hole["y"])
-        .placeSketch(hole["shape"])
-        .cutBlind(-depth)
-    )
-
-
 def hex_vents(*, size, width, height):
+    # size is radius of the hexagon
+    # Information about how this works:
+    # https://www.redblobgames.com/grids/hexagons/
+
+    x_step = size * (3**0.5)
+    y_step = size * 3 / 2
+
+    x_count = floor(width / x_step) - 1
+
+    if height > 4 * size:
+        y_count = floor((height - 2 * size) / (1.5 * size))
+    else:
+        y_count = 1
+
+    x_size = (x_count + 0.5) * x_step  # Assumes at least 2 rows
+    y_size = 2 * size + 1.5 * size * (y_count - 1)
+
+    x_offset = (width - x_size) / 2 + 0.5 * x_step
+    y_offset = (height - y_size) / 2 + size
+
     vent_positions = []
-    for x in range(1, width // size):
-        for y in range(1, int(height // size / 0.8)):
+    for x in range(0, x_count):
+        for y in range(0, y_count):
             vent_positions.append(
                 (
-                    (x + (y % 2) / 2) * size - size * 0.2,
-                    y * size * 0.8 + size * 0.2,
+                    (x + (y % 2) / 2) * x_step + x_offset,
+                    y * y_step + y_offset,
                 )
             )
     vents = [
         {
             "x": 0,
             "y": 0,
-            "shape": cq.Sketch().push(vent_positions).regularPolygon((size) / 2, 6),
+            "shape": cq.Sketch().push(vent_positions).regularPolygon(size * 0.9, 6),
         }
     ]
 
diff --git a/notebook_nueva/zero_holder.py b/notebook_nueva/zero_holder.py
index daf8d10..0895873 100644
--- a/notebook_nueva/zero_holder.py
+++ b/notebook_nueva/zero_holder.py
@@ -1,6 +1,6 @@
 import cadquery as cq
 
-from utils import extrude_shape, punch_hole2, hex_vents
+from utils import extrude_shape, punch_hole, hex_vents
 
 width = 65
 height = 30
@@ -42,7 +42,7 @@ elements = [
     },
 ]
 
-vents = hex_vents(size=6, width=width, height=height)
+vents = hex_vents(size=3, width=width, height=height)
 
 holes = [
     # One hole for everything TODO: improve
@@ -70,7 +70,7 @@ def add(
     if bottom_face:
         # Vents
         for vent in vents:
-            model = punch_hole2(
+            model = punch_hole(
                 model=model,
                 face=bottom_face,
                 w=width,
@@ -88,16 +88,16 @@ def add(
                 face=bottom_face,
                 w=width,
                 h=height,
-                x_offset=offset_x + element["x"],
-                y_offset=shell_t + offset_y + element["y"],
-                shape=element["shape"],
+                x_offset=offset_x,
+                y_offset=shell_t + offset_y,
+                element=element,
                 height=-(element["height"] + shell_t),
             )
 
     # Holes
     if back_face:
         for hole in holes:
-            model = punch_hole2(
+            model = punch_hole(
                 model=model,
                 face=back_face,
                 w=width,