Add pipe connector

This model connects a Weller outlet to the flexible air pipe.

pipe_connector.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2025  Thomas Kolb (cfr34k)
+# This model is licensed under CC BY-SA 4.0. To view a copy of this license,
+# visit https://creativecommons.org/licenses/by-sa/4.0/
+
+from build123d import *
+
+from bd_warehouse.thread import IsoThread, Thread
+
+from math import sin, cos, tan, pi, acos
+
+ALIGN_BOTTOM = (Align.CENTER, Align.CENTER, Align.MIN)
+ALIGN_TOP = (Align.CENTER, Align.CENTER, Align.MAX)
+
+plug_clip_d = 62.5
+plug_clip_offset = 11.5
+plug_clip_l = 3.0
+plug_l = 25
+
+plug_notch_w = 3
+plug_notch_offset = 3
+plug_notch_depth = plug_l - plug_notch_offset
+
+adapter_inner_d = 61.5
+adapter_outer_d = 65
+plug_wall_t = (adapter_outer_d - adapter_inner_d) / 2
+adapter_l = 30
+
+transition_l = 5
+
+thread_inner_d = 61
+thread_depth = 4
+thread_outer_d = thread_inner_d + 2*thread_depth
+thread_wall_t = 2
+thread_shell_d = thread_outer_d + 2*thread_wall_t
+
+thread_l = 50
+
+thread_steepness = 12.0
+
+thread_shell = Pos(Z=adapter_l) * (Cylinder(thread_shell_d/2, thread_l, align=ALIGN_BOTTOM) \
+        - Cylinder(thread_outer_d/2, thread_l, align=ALIGN_BOTTOM))
+
+thread = Pos(Z=adapter_l) * Thread(apex_radius=thread_inner_d/2, apex_width=3, root_radius=thread_outer_d/2, root_width=thread_steepness-4, pitch=thread_steepness, length=thread_l, end_finishes=['fade', 'fade'], hand='left', align=ALIGN_BOTTOM)
+
+duct = Cylinder(adapter_inner_d/2, adapter_l, align=ALIGN_BOTTOM)
+
+adapter = Cylinder(adapter_outer_d/2, adapter_l, align=ALIGN_BOTTOM) \
+        - Pos(Z=plug_clip_offset) * Cylinder(plug_clip_d/2, plug_clip_l, align=ALIGN_BOTTOM) \
+
+transition_cone = Pos(Z=adapter_l) * Cone(adapter_outer_d/2, thread_shell_d/2, transition_l, align=ALIGN_TOP)
+
+device = adapter + transition_cone - duct + thread_shell + thread
+
+show_object(device, "device", options={"alpha":0.0, "color": (192, 192, 192)})