From 335f002a1af8c5e7121c8de68d61135f0baf5e76 Mon Sep 17 00:00:00 2001
From: Alex Selimov <alex@alexselimov.com>
Date: Mon, 21 Sep 2026 09:13:47 -0400
Subject: [PATCH] PTFE stopper for space pi se

---
 space_pi_se_PTFE_stopper.py | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 space_pi_se_PTFE_stopper.py

diff --git a/space_pi_se_PTFE_stopper.py b/space_pi_se_PTFE_stopper.py
new file mode 100644
index 0000000..15d5a44
--- /dev/null
+++ b/space_pi_se_PTFE_stopper.py
@@ -0,0 +1,36 @@
+# /// script
+# requires-python = ">=3.14"
+# dependencies = ["ocp_vscode", "build123d"]
+# ///
+
+from build123d import *
+from ocp_vscode import *
+
+### Dimensions ###
+diameter_at_hole = 5.5 * MM
+ptfe_length = 5 * MM
+filament_length = 5 * MM
+diameter_at_filament = 3 * MM
+washer_thickness = 2 * MM
+###################
+
+with BuildPart() as stopper:
+    with BuildSketch() as sketch:
+        Circle(diameter_at_hole / 2.0 + 2 * MM)
+        Circle(diameter_at_hole / 2.0, mode=Mode.SUBTRACT)
+    extrude(amount=washer_thickness)
+    with BuildSketch(Plane.XY.offset(washer_thickness)) as sketch:
+        Circle(diameter_at_hole / 2.0 + 0.5 * MM)
+        Circle(diameter_at_hole / 2.0, mode=Mode.SUBTRACT)
+    extrude(amount=ptfe_length)
+    offset = ptfe_length + washer_thickness
+    with BuildSketch(Plane.XY.offset(offset)) as sketch:
+        Circle(diameter_at_hole / 2.0 + 0.5 * MM)
+        Circle(diameter_at_hole / 2.0, mode=Mode.SUBTRACT)
+    offset += filament_length
+    with BuildSketch(Plane.XY.offset(offset)) as sketch:
+        Circle(diameter_at_filament / 2.0 + 0.5 * MM)
+        Circle(diameter_at_filament / 2.0, mode=Mode.SUBTRACT)
+    loft()
+    show(stopper)
+export_stl(stopper.part, "stopper.stl")