Completing Joints docs

docs/rod_end.py

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+from build123d import *
+from bd_warehouse.thread import IsoThread
+from ocp_vscode import *
+
+# Create the thread so the min radius is available below
+thread = IsoThread(
+    major_diameter=8, pitch=1.25, length=20, end_finishes=("fade", "raw")
+)
+
+with BuildPart() as rod_end:
+    # Create the outer shape
+    with BuildSketch():
+        Circle(22.25 / 2)
+        with Locations((0, -12)):
+            Rectangle(8, 1)
+        make_hull()
+        split(bisect_by=Plane.YZ)
+    revolve(axis=Axis.Y)
+    # Refine the shape
+    with BuildSketch(Plane.YZ) as s2:
+        Rectangle(25, 8, align=(Align.MIN, Align.CENTER))
+        Rectangle(9, 10, align=(Align.MIN, Align.CENTER))
+        chamfer(s2.vertices(), 0.5)
+    revolve(axis=Axis.Z, mode=Mode.INTERSECT)
+    # Add the screw shaft
+    Cylinder(
+        thread.min_radius,
+        30,
+        rotation=(90, 0, 0),
+        align=(Align.CENTER, Align.CENTER, Align.MIN),
+    )
+    # Cutout the ball socket
+    Sphere(15.89 / 2, mode=Mode.SUBTRACT)  # Add thread
+    with Locations((0, -30, 0)):
+        add(thread, rotation=(-90, 0, 0))
+    # Create the ball joint
+    BallJoint(
+        "socket",
+        rod_end.part,
+        joint_location=Location(),
+        angular_range=((-14, 14), (-14, 14), (0, 360)),
+    )
+
+with BuildPart() as ball:
+    Sphere(15.88 / 2)
+    Box(50, 50, 13, mode=Mode.INTERSECT)
+    Hole(4)
+    ball.part.color = Color("aliceblue")
+    RigidJoint("ball", ball.part, joint_location=Location())
+
+rod_end.part.joints["socket"].connect_to(ball.part.joints["ball"], angles=(5, 10, 0))
+
+show(rod_end.part, ball.part)