diff --git a/src/build123d/topology/one_d.py b/src/build123d/topology/one_d.py
index 0964721..27f9b11 100644
--- a/src/build123d/topology/one_d.py
+++ b/src/build123d/topology/one_d.py
@@ -305,7 +305,9 @@ class Mixin1D(Shape[TOPODS]):
     @property
     def length(self) -> float:
         """Edge or Wire length"""
-        return GCPnts_AbscissaPoint.Length_s(self.geom_adaptor())
+        props = GProp_GProps()
+        BRepGProp.LinearProperties_s(self.wrapped, props)
+        return props.Mass()
 
     @property
     def radius(self) -> float:
@@ -796,19 +798,20 @@ class Mixin1D(Shape[TOPODS]):
             for obj in common_set:
                 match (obj, target):
                     case (_, Plane()):
+                        assert isinstance(other.wrapped, gp_Pln)
                         target = Shape(BRepBuilderAPI_MakeFace(other.wrapped).Face())
-                        operation = BRepAlgoAPI_Section()
-                        result = bool_op((obj,), (target,), operation)
-                        operation = BRepAlgoAPI_Common()
-                        result.extend(bool_op((obj,), (target,), operation))
+                        operation1 = BRepAlgoAPI_Section()
+                        result = bool_op((obj,), (target,), operation1)
+                        operation2 = BRepAlgoAPI_Common()
+                        result.extend(bool_op((obj,), (target,), operation2))
 
                     case (_, Vertex() | Edge() | Wire()):
-                        operation = BRepAlgoAPI_Section()
-                        section = bool_op((obj,), (target,), operation)
+                        operation1 = BRepAlgoAPI_Section()
+                        section = bool_op((obj,), (target,), operation1)
                         result = section
                         if not section:
-                            operation = BRepAlgoAPI_Common()
-                            result.extend(bool_op((obj,), (target,), operation))
+                            operation2 = BRepAlgoAPI_Common()
+                            result.extend(bool_op((obj,), (target,), operation2))
 
                     case _ if issubclass(type(target), Shape):
                         result = target.intersect(obj)
@@ -2940,7 +2943,7 @@ class Edge(Mixin1D[TopoDS_Edge]):
             topods_edge = BRepBuilderAPI_MakeEdge(curve.Reversed(), last, first).Edge()
             reversed_edge.wrapped = topods_edge
         else:
-            reversed_edge.wrapped = downcast(self.wrapped.Reversed())
+            reversed_edge.wrapped = TopoDS.Edge_s(self.wrapped.Reversed())
         return reversed_edge
 
     def to_axis(self) -> Axis:
diff --git a/tests/test_build_line.py b/tests/test_build_line.py
index be4cd8d..ae7364a 100644
--- a/tests/test_build_line.py
+++ b/tests/test_build_line.py
@@ -98,14 +98,14 @@ class BuildLineTests(unittest.TestCase):
                 powerup @ 0,
                 tangents=(screw % 1, powerup % 0),
             )
-        self.assertAlmostEqual(roller_coaster.wires()[0].length, 678.983628932414, 5)
+        self.assertAlmostEqual(roller_coaster.wires()[0].length, 678.9785865257071, 5)
 
     def test_bezier(self):
         pts = [(0, 0), (20, 20), (40, 0), (0, -40), (-60, 0), (0, 100), (100, 0)]
         wts = [1.0, 1.0, 2.0, 3.0, 4.0, 2.0, 1.0]
         with BuildLine() as bz:
             b1 = Bezier(*pts, weights=wts)
-        self.assertAlmostEqual(bz.wires()[0].length, 225.86389406824566, 5)
+        self.assertAlmostEqual(bz.wires()[0].length, 225.98661946375782, 5)
         self.assertTrue(isinstance(b1, Edge))
 
     def test_double_tangent_arc(self):