diff --git a/src/precomp/skybox.py b/src/precomp/skybox.py
index 19ee94431..4f14b4294 100644
--- a/src/precomp/skybox.py
+++ b/src/precomp/skybox.py
@@ -7,17 +7,34 @@
 
 LOGGER = srctools.logger.get_logger(__name__)
 
-def generate(vmf : VMF, coll):
-    # Generate our walls
+EX_SIZE_MAX = Vec(8832, 8832, 8832)
+EX_SIZE_MIN = Vec(5632, 5632, 5632)
+
+def make_skybox(vmf : VMF, coll):
     if not precomp.options.get(bool, 'extend_chamber'):
         return None
 
-    size_max = Vec(8832, 8832, 8832)
+    # Make the box that contains the map
+    make_skybox_shell(vmf)
+
+    # Move Elevators to valid location if possible and then generate elevator shell
+
+    # Open Walls and add square beams
+
+    # Add exterior decoration
+
+def make_skybox_shell(vmf : VMF):
+    # Generate our walls
     size_pad = Vec(2048, 2048, 128)
 
+    pos_min,pos_max = Vec.bbox(POS.min, POS.max)
     bbox_origin = (POS.min + POS.max) / 2
-    bbox_lower = min(-(size_max/2), (POS.min - bbox_origin) - size_pad) + bbox_origin
-    bbox_upper = min(size_max/2, (POS.max - bbox_origin) + size_pad) + bbox_origin
+    bbox_lower, bbox_upper = Vec.bbox(
+        -max(EX_SIZE_MIN / 2, min(EX_SIZE_MAX / 2, -(pos_min - bbox_origin) + size_pad)),
+        max(EX_SIZE_MIN / 2, min(EX_SIZE_MAX / 2, (pos_max - bbox_origin) + size_pad))
+    )
+
+    for solid in vmf.make_hollow(bbox_lower + bbox_origin, bbox_upper + bbox_origin, 16, consts.Tools.NODRAW, consts.Tools.BLACK):
+        vmf.add_brush(solid)
 
-    for solid in vmf.make_hollow(bbox_lower, bbox_upper, 16, consts.Tools.NODRAW, consts.Tools.BLACK):
-        vmf.add_brush(solid)
\ No newline at end of file
+    # vmf.add_brush(vmf.make_prism(pos_min, pos_max, consts.Tools.SKIP).solid)
\ No newline at end of file
diff --git a/src/vbsp.py b/src/vbsp.py
index 4e8faec4b..76e5c590f 100644
--- a/src/vbsp.py
+++ b/src/vbsp.py
@@ -1668,7 +1668,7 @@ async def main() -> None:
         conditions.check_all(vmf, coll, info)
         add_extra_ents(vmf, info)
 
-        skybox.generate(vmf, coll)
+        skybox.make_skybox(vmf, coll)
 
         tiling.generate_brushes(vmf)
         faithplate.gen_faithplates(vmf, info.has_attr('superposition'))