From aae3add1a6fa9b842c2a71bf60f4d0f048be8026 Mon Sep 17 00:00:00 2001
From: Till Schmidt <till.schmidt@tilltheend.de>
Date: Fri, 26 Jun 2026 23:06:46 +0200
Subject: [PATCH] update

---
 opel_pin.py | 39 ++++++++++++++++++++++++---------------
 1 file changed, 24 insertions(+), 15 deletions(-)

diff --git a/opel_pin.py b/opel_pin.py
index 72781a9..2114377 100644
--- a/opel_pin.py
+++ b/opel_pin.py
@@ -16,23 +16,13 @@ pin_diameter   = model_size * (3.1 / model_size)
 pin_length     = model_size * (10.8 / model_size)
 pin_spacing    = model_size * (14.0 / model_size)
 pin_height_offset = model_size * (1.55 / model_size)
-fillet_radius  = model_size * (0.5 / model_size)
+fillet_radius  = model_size * (0.15 / model_size)
 
 # --- Lightning Bolt Proportions ---
-# W is now the radius of the ring PLUS your desired flat overhang
 W = (outer_diameter / 2) + overhang
-
-# --- Lightning Bolt Proportions (The Vintage "Z" Fix) ---
-# We use a massive bounding box to draw the Z, then use your Circle(W) to cleanly trim it.
 bound = model_size 
-
-# Vertical (Y) coordinates for the horizontal bars
-# H_outer defines the overall height. H_inner defines where the cutouts stop.
 H_outer = model_size * (3.1 / model_size) 
 H_inner = model_size * (0.5 / model_size)
-
-# Horizontal (X) coordinates for the zigzag points
-# X_point is the sharp outer tip. X_inner is how deeply the diagonal cuts past center.
 X_point = model_size * (5.8 / model_size)
 X_inner = model_size * (2.7 / model_size)
 
@@ -48,19 +38,34 @@ with BuildPart() as opel_pin:
         pts = [
             (-bound, H_outer),           # 1. Top-left outer edge
             (-bound, -H_inner),          # 2. Bottom-left outer edge of upper bar
-            (-X_inner, -H_inner),         # 3. Inner bottom corner (cuts right, past center)
+            (-X_inner, -H_inner),        # 3. Inner bottom corner (cuts right, past center)
             (-X_point, -H_outer),        # 4. Sharp bottom-left point (diagonals back left)
             (bound, -H_outer),           # 5. Bottom-right outer edge
             (bound, H_inner),            # 6. Top-right outer edge of lower bar
-            (X_inner, H_inner),         # 7. Inner top corner (cuts left, past center)
+            (X_inner, H_inner),          # 7. Inner top corner (cuts left, past center)
             (X_point, H_outer)           # 8. Sharp top-right point (diagonals back right)
         ]
-        Polygon(*pts)
+        z_shape = Polygon(*pts)
+
+        # Fillet the 2D corners of the Z shape so the inner zig-zag isn't infinitely sharp
+        fillet(z_shape.vertices(), radius=fillet_radius)
         
-        # Cleanly slice off the overhangs using your dynamic W radius
+        # Cleanly slice off the overhangs
         Circle(W, mode=Mode.INTERSECT)
     extrude(amount=thickness)
 
+    # ==========================================
+    # ---> THE FIX: Fillet ALL top edges <---
+    # 1. Grab the highest face on the Z-axis (the newly merged face of both ring + bolt)
+    top_face = opel_pin.faces().sort_by(Axis.Z)[-1]
+    
+    # 2. Grab ALL edges of that top face (no filtering)
+    all_top_edges = top_face.edges()
+    
+    # 3. Apply the 3D fillet to the entire border
+    fillet(all_top_edges, radius=fillet_radius)
+    # ==========================================
+
     # 3. Mounting Pins (on the back face)
     bottom_face = opel_pin.faces().sort_by(Axis.Z)[0]
     
@@ -70,5 +75,9 @@ with BuildPart() as opel_pin:
             
     extrude(amount=pin_length)
 
+# --- Export for 3D Printing ---
+# This saves a STEP file in the same folder as your python script
+export_step(opel_pin.part, "vintage_opel_pin.step")
+
 # --- Send to OCP CAD Viewer ---
 show(opel_pin)
\ No newline at end of file