diff --git a/nhf/touhou/shiki_eiki/crown.py b/nhf/touhou/shiki_eiki/crown.py
index bbeb3d5..005f42b 100644
--- a/nhf/touhou/shiki_eiki/crown.py
+++ b/nhf/touhou/shiki_eiki/crown.py
@@ -106,6 +106,10 @@ class Crown(Model):
         rat = self.slot_r0  / (self.slot_r1 - self.slot_r0)
         return self.height * rat
     @property
+    def slot_outer_h0(self):
+        rat = (self.slot_r0 + self.side_guard_thickness) / (self.slot_r1 - self.slot_r0)
+        return self.height * rat
+    @property
     def slot_theta(self) -> float:
         """
         Cone tilt, related to other quantities by
@@ -164,10 +168,12 @@ class Crown(Model):
             .assemble()
         )
 
-    @target(name="side", kind=TargetKind.DXF)
-    def profile_side(self) -> Cq.Sketch:
+    @target(name="eye", kind=TargetKind.DXF)
+    def profile_eye(self) -> Cq.Sketch:
+        """
+        deprecated
+        """
         dy = self.facet_width_upper * 0.1
-        x_side = self.facet_width_upper
         y_tip = self.height - self.margin
 
         eye = (
@@ -182,16 +188,19 @@ class Crown(Model):
             )
             .bezier([
                 (dy, y_tip - dy),
+                (dy/2, y_tip - dy*.6),
+                (dy/4, y_tip - dy/2),
                 (0, y_tip - dy/2),
+            ])
+            .bezier([
                 (0, y_tip - dy/2),
+                (-dy/4, y_tip - dy/2),
+                (-dy/2, y_tip - dy*.6),
                 (-dy, y_tip - dy),
             ])
             .assemble()
         )
-        return (
-            self.profile_base()
-            .boolean(eye, mode='s')
-        )
+        return eye
 
     @target(name="dot", kind=TargetKind.DXF)
     def profile_dot(self) -> Cq.Sketch:
@@ -201,7 +210,9 @@ class Crown(Model):
         )
 
     def profile_front_wing(self, mirror: bool) -> Cq.Sketch:
-        # Add the two wings to the base profile
+        """
+        These two wings help the front profile attach
+        """
         hw = self.front_wing_height / math.cos(self.slot_theta)
         hw0 = (self.front_wing_dh + self.slot_h0) / math.cos(self.slot_theta)
         hw1 = hw0 + hw
@@ -238,7 +249,9 @@ class Crown(Model):
 
     @target(name="front", kind=TargetKind.DXF)
     def profile_front(self) -> Cq.Sketch:
-
+        """
+        Front profile slots into holes on the side guards
+        """
         profile_base = (
             self.profile_base()
             .boolean(self.profile_front_wing(False), mode='a')
@@ -442,9 +455,9 @@ class Crown(Model):
         p_top5 = Cq.Location.from2d(0.54 * dx, 0.349 * dy)
         p_top5_c1 = p_top5 * Cq.Location.from2d(0.103 * dx, 0.017 * dy)
         p_top5_c2 = p_top5 * Cq.Location.from2d(0.158 * dx, 0.034 * dy)
-        p_base_c = Cq.Location.from2d(1.245 * dx, 0.55 * dy)
+        p_base_c = Cq.Location.from2d(1.5 * dx, 0.55 * dy)
 
-        y0 = self.slot_h0 / math.cos(self.slot_theta)
+        y0 = self.slot_outer_h0 / math.cos(self.slot_theta)
         phi2 = self.slot_phi / 2
         p_base = Cq.Location.from2d(y0 * math.sin(phi2), -y0 + y0 * math.cos(phi2))
 
@@ -743,48 +756,3 @@ class Crown(Model):
         )
         return a
 
-    def old_assembly(self) -> Cq.Assembly:
-        front = (
-            Cq.Workplane('XY')
-            .placeSketch(self.profile_front())
-            .extrude(self.thickness)
-        )
-        side = (
-            Cq.Workplane('XY')
-            .placeSketch(self.profile_side())
-            .extrude(self.thickness)
-        )
-        side_guard = (
-            Cq.Workplane('XY')
-            .placeSketch(self.profile_side_guard())
-            .extrude(self.thickness)
-        )
-        assembly = (
-            Cq.Assembly()
-            .addS(
-                front,
-                name="front",
-                material=self.material,
-                role=Role.DECORATION,
-            )
-        )
-        for i, pos in enumerate([-2, -1, 1, 2]):
-            x = self.facet_width_upper * pos
-            assembly = (
-                assembly
-                .addS(
-                    side,
-                    name=f"side{i}",
-                    material=self.material,
-                    role=Role.DECORATION,
-                    loc=Cq.Location.from2d(x, 0),
-                )
-                .addS(
-                    side_guard,
-                    name=f"guard{i}",
-                    material=self.material,
-                    role=Role.DECORATION,
-                    loc=Cq.Location(x, 0, self.thickness),
-                )
-            )
-        return assembly