diff --git a/TransportPlugin.csproj b/TransportPlugin.csproj
index fb6e518..a697ca9 100644
--- a/TransportPlugin.csproj
+++ b/TransportPlugin.csproj
@@ -367,6 +367,7 @@
     <Compile Include="src\Utils\NwdExportHelper.cs" />
     <Compile Include="src\Utils\ModelItemTransformHelper.cs" />
     <Compile Include="src\Utils\CachedTriangle3D.cs" />
+    <Compile Include="src\Utils\ClipboardHelper.cs" />
     <Compile Include="src\Utils\PathHelper.cs" />
     <Compile Include="src\Utils\RailPathPoseHelper.cs" />
     <Compile Include="src\Utils\CollisionSceneHelper.cs" />
diff --git a/doc/design/2026/NavisworksAPI使用方法.md b/doc/design/2026/NavisworksAPI使用方法.md
index 8f79a8d..114d809 100644
--- a/doc/design/2026/NavisworksAPI使用方法.md
+++ b/doc/design/2026/NavisworksAPI使用方法.md
@@ -631,6 +631,106 @@ Transform3D original = geometry != null ? geometry.OriginalTransform : item.Tran
   - 如果业务尺寸是后续叠加出来的，单纯 reset 会把业务尺寸也一起清掉
   - 因此虚拟物体常常需要 reset 后再重放业务尺寸
 
+### 11.5.1 真实物体 Rail 起点旋转的两个关键经验
+
+这是本项目在真实物体沿 `Rail` 路径“移动到起点”与“角度调整”排查中确认的两条硬结论。
+
+#### A. 正确理解 Navisworks 的“增量旋转”
+
+`document.Models.OverridePermanentTransform(items, transform, false)` 施加的是**增量层**，不是“把对象直接设成最终姿态”。
+
+对真实物体要区分 3 个量：
+
+1. `OriginalTransform`
+   - 原始设计文件里的姿态
+2. `PermanentOverrideTransform`
+   - 我们写进去的增量/覆盖姿态
+3. `PermanentTransform / ActiveTransform`
+   - Navisworks 最终真正显示出来的姿态
+
+项目实测中，真实物体常见关系应按下面理解：
+
+```text
+最终显示姿态 = OriginalTransform × PermanentOverrideTransform
+```
+
+因此：
+
+- 如果你手上拿到的是“最终想看到的目标姿态”
+- 不能直接把它当 `PermanentOverrideTransform` 写进去
+- 必须先换算出真正应该写入的 override 姿态
+
+否则就会出现：
+
+- 目标姿态日志看起来是对的
+- `OverridePermanentTransform` 也写进去了
+- 但最终 `ActiveTransform` 仍然被原始模型姿态再转一次
+
+这类问题在真实物体上非常常见，尤其是 Revit 导入件。
+
+#### B. 正确区分“宿主坐标系语义”和“物体自身坐标系语义”
+
+UI 里的角度调整，用户理解的一定是**宿主坐标系**：
+
+- `X/Y/Z` 表示宿主世界 `X/Y/Z`
+
+但 Navisworks 对真实物体施加旋转时，底层消费的仍然是**物体自身轴语义**。
+
+因此正确链路必须是：
+
+```text
+宿主世界轴角度输入
+-> 映射到当前真实物体的本地轴
+-> 再生成本地 correction quaternion
+-> 最后交给 OverridePermanentTransform 链
+```
+
+不能直接把“宿主世界 X/Y/Z”角度传给一个只接受物体本地轴语义的方法。
+
+#### C. 哪种映射是对的
+
+真实物体这里至少有两套看起来很像、但不能混用的映射：
+
+1. **宿主世界轴 -> raw 本地轴**
+   - 用于 UI 角度调整
+   - 例如：宿主世界 `X` 对应物体本地 `+Y`
+2. **宿主语义轴 -> raw 本地轴**
+   - 用于路径姿态解释
+   - 例如：`Rail` 的 `forward/up` 选择
+
+这两套映射在 `up` 轴上可能碰巧一致，但在水平轴上经常不同。
+
+项目这次问题的根因之一，就是把：
+
+- “路径姿态用的宿主语义映射”
+
+误当成了：
+
+- “角度调整用的宿主世界轴映射”
+
+结果表现为：
+
+- `Y` 调整看起来正确
+- `X/Z` 调整方向却反了
+
+#### D. 项目中的推荐实现
+
+对真实物体：
+
+1. 先从 fragment representative frame 读取 `rawAxisX / rawAxisY / rawAxisZ`
+2. 单独解析：
+   - 宿主世界 `X/Y/Z` 分别对应哪根 raw 本地轴
+   - 宿主语义 `forward/up` 对应哪根 raw 本地轴
+3. UI 角度调整只使用“宿主世界轴映射”
+4. 路径姿态求解只使用“宿主语义映射”
+5. 不要让这两套映射复用同一组字段名后再靠上下文猜
+
+一句话记忆：
+
+- **角度调整看宿主世界轴**
+- **路径姿态看业务语义轴**
+- **最终落到 Navisworks 时，始终要转回物体自身轴**
+
 ### 11.6 常见误区
 
 #### 11.6.1 误区：`ModelItem.Transform` 代表当前姿态
diff --git a/src/UI/WPF/Views/CoordinateSystemResultDialog.xaml.cs b/src/UI/WPF/Views/CoordinateSystemResultDialog.xaml.cs
index 6b3a7ff..9963c70 100644
--- a/src/UI/WPF/Views/CoordinateSystemResultDialog.xaml.cs
+++ b/src/UI/WPF/Views/CoordinateSystemResultDialog.xaml.cs
@@ -27,15 +27,12 @@ namespace NavisworksTransport.UI.WPF.Views
         /// </summary>
         private void CopyButton_Click(object sender, RoutedEventArgs e)
         {
-            try
+            if (ClipboardHelper.TrySetText(ResultTextBox.Text, "捕获真实物体位姿"))
             {
-                Clipboard.SetText(ResultTextBox.Text);
-                MessageBox.Show("内容已复制到剪贴板！", "复制成功", MessageBoxButton.OK, MessageBoxImage.Information);
-            }
-            catch (System.Exception ex)
-            {
-                MessageBox.Show($"复制失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                return;
             }
+
+            MessageBox.Show("复制到剪贴板失败，请稍后重试。", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
         }
 
         /// <summary>
diff --git a/src/UI/WPF/Views/EditCoordinatesWindow.xaml b/src/UI/WPF/Views/EditCoordinatesWindow.xaml
index d952326..be08209 100644
--- a/src/UI/WPF/Views/EditCoordinatesWindow.xaml
+++ b/src/UI/WPF/Views/EditCoordinatesWindow.xaml
@@ -111,6 +111,17 @@
         <!-- 按钮栏 -->
         <Border Grid.Row="2" Background="#FFF8FBFF" BorderBrush="#FFD4E7FF" BorderThickness="0,1,0,0" Padding="20,12">
             <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+                <Button x:Name="CopyButton"
+                        Click="OnCopyClick"
+                        Style="{StaticResource IconButtonStyle}"
+                        Width="32"
+                        Height="32"
+                        Margin="0,0,10,0"
+                        ToolTip="复制坐标 (格式: X,Y,Z)">
+                    <Path Data="{StaticResource CopyIconGeometry}"
+                          Fill="{StaticResource NavisworksPrimaryBrush}"
+                          Width="16" Height="16" Stretch="Uniform"/>
+                </Button>
                 <Button x:Name="PasteButton"
                         Click="OnPasteClick" 
                         Style="{StaticResource IconButtonStyle}" 
diff --git a/src/UI/WPF/Views/EditCoordinatesWindow.xaml.cs b/src/UI/WPF/Views/EditCoordinatesWindow.xaml.cs
index 902902c..0f41f5a 100644
--- a/src/UI/WPF/Views/EditCoordinatesWindow.xaml.cs
+++ b/src/UI/WPF/Views/EditCoordinatesWindow.xaml.cs
@@ -46,6 +46,16 @@ namespace NavisworksTransport.UI.WPF.Views
             Close();
         }
 
+        /// <summary>
+        /// 复制坐标
+        /// </summary>
+        private void OnCopyClick(object sender, RoutedEventArgs e)
+        {
+            string coordinate = string.Format("{0:0.000}, {1:0.000}, {2:0.000}", X, Y, Z);
+            bool success = ClipboardHelper.TrySetText(coordinate, "编辑路径点坐标");
+            ShowButtonFeedback(CopyButton, success);
+        }
+
         /// <summary>
         /// 粘贴坐标
         /// </summary>
diff --git a/src/UI/WPF/Views/ModelItemBoundsWindow.xaml.cs b/src/UI/WPF/Views/ModelItemBoundsWindow.xaml.cs
index cd83161..f6591a6 100644
--- a/src/UI/WPF/Views/ModelItemBoundsWindow.xaml.cs
+++ b/src/UI/WPF/Views/ModelItemBoundsWindow.xaml.cs
@@ -192,16 +192,9 @@ namespace NavisworksTransport.UI.WPF.Views
         /// </summary>
         private void OnCopyCenterClick(object sender, RoutedEventArgs e)
         {
-            try
-            {
-                string coordinate = string.Format("{0:0.000}, {1:0.000}, {2:0.000}", CenterX, CenterY, CenterZ);
-                System.Windows.Clipboard.SetText(coordinate);
-                ShowButtonFeedback(CopyCenterButton);
-            }
-            catch (Exception ex)
-            {
-                LogManager.Debug($"[坐标窗口] 复制到剪贴板失败: {ex.Message}");
-            }
+            string coordinate = string.Format("{0:0.000}, {1:0.000}, {2:0.000}", CenterX, CenterY, CenterZ);
+            bool success = ClipboardHelper.TrySetText(coordinate, "元素包围盒信息");
+            ShowButtonFeedback(CopyCenterButton, success);
         }
 
         /// <summary>
@@ -209,16 +202,9 @@ namespace NavisworksTransport.UI.WPF.Views
         /// </summary>
         private void OnCopyTopCenterClick(object sender, RoutedEventArgs e)
         {
-            try
-            {
-                string coordinate = string.Format("{0:0.000}, {1:0.000}, {2:0.000}", TopCenterX, TopCenterY, TopCenterZ);
-                System.Windows.Clipboard.SetText(coordinate);
-                ShowButtonFeedback(CopyTopButton);
-            }
-            catch (Exception ex)
-            {
-                LogManager.Debug($"[坐标窗口] 复制到剪贴板失败: {ex.Message}");
-            }
+            string coordinate = string.Format("{0:0.000}, {1:0.000}, {2:0.000}", TopCenterX, TopCenterY, TopCenterZ);
+            bool success = ClipboardHelper.TrySetText(coordinate, "元素包围盒信息");
+            ShowButtonFeedback(CopyTopButton, success);
         }
 
         /// <summary>
@@ -226,33 +212,32 @@ namespace NavisworksTransport.UI.WPF.Views
         /// </summary>
         private void OnCopyBottomCenterClick(object sender, RoutedEventArgs e)
         {
-            try
-            {
-                string coordinate = string.Format("{0:0.000}, {1:0.000}, {2:0.000}", BottomCenterX, BottomCenterY, BottomCenterZ);
-                System.Windows.Clipboard.SetText(coordinate);
-                ShowButtonFeedback(CopyBottomButton);
-            }
-            catch (Exception ex)
-            {
-                LogManager.Debug($"[坐标窗口] 复制到剪贴板失败: {ex.Message}");
-            }
+            string coordinate = string.Format("{0:0.000}, {1:0.000}, {2:0.000}", BottomCenterX, BottomCenterY, BottomCenterZ);
+            bool success = ClipboardHelper.TrySetText(coordinate, "元素包围盒信息");
+            ShowButtonFeedback(CopyBottomButton, success);
         }
 
         /// <summary>
-        /// 显示按钮点击反馈（绿色背景闪烁）
+        /// 显示按钮点击反馈
         /// </summary>
-        private void ShowButtonFeedback(Button button)
+        private void ShowButtonFeedback(Button button, bool success)
         {
             if (button == null) return;
             
             var originalBackground = button.Background;
             var originalBorderBrush = button.BorderBrush;
             
-            // 变为绿色表示成功
-            button.Background = new SolidColorBrush(System.Windows.Media.Color.FromRgb(76, 175, 80));
-            button.BorderBrush = new SolidColorBrush(System.Windows.Media.Color.FromRgb(56, 142, 60));
+            if (success)
+            {
+                button.Background = new SolidColorBrush(System.Windows.Media.Color.FromRgb(76, 175, 80));
+                button.BorderBrush = new SolidColorBrush(System.Windows.Media.Color.FromRgb(56, 142, 60));
+            }
+            else
+            {
+                button.Background = new SolidColorBrush(System.Windows.Media.Color.FromRgb(244, 67, 54));
+                button.BorderBrush = new SolidColorBrush(System.Windows.Media.Color.FromRgb(211, 47, 47));
+            }
             
-            // 800毫秒后恢复
             var timer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(800) };
             timer.Tick += (s, e) =>
             {
diff --git a/src/Utils/ClipboardHelper.cs b/src/Utils/ClipboardHelper.cs
new file mode 100644
index 0000000..c6fed38
--- /dev/null
+++ b/src/Utils/ClipboardHelper.cs
@@ -0,0 +1,68 @@
+using System;
+using System.Threading;
+using System.Windows;
+
+namespace NavisworksTransport
+{
+    /// <summary>
+    /// 剪贴板工具方法
+    /// </summary>
+    public static class ClipboardHelper
+    {
+        private const int MaxAttempts = 6;
+        private const int RetryDelayMilliseconds = 80;
+
+        /// <summary>
+        /// 尝试写入文本到剪贴板
+        /// </summary>
+        public static bool TrySetText(string text, string context = null)
+        {
+            string clipboardText = text ?? string.Empty;
+            Exception lastException = null;
+
+            for (int attempt = 0; attempt < MaxAttempts; attempt++)
+            {
+                if (TrySetTextOnStaThread(clipboardText, out lastException))
+                {
+                    return true;
+                }
+
+                if (attempt < MaxAttempts - 1)
+                {
+                    Thread.Sleep(RetryDelayMilliseconds);
+                }
+            }
+
+            string prefix = string.IsNullOrWhiteSpace(context) ? "[剪贴板]" : $"[{context}]";
+            LogManager.Debug($"{prefix} 写入剪贴板失败: {lastException?.Message ?? "未知错误"}");
+            return false;
+        }
+
+        private static bool TrySetTextOnStaThread(string text, out Exception exception)
+        {
+            bool success = false;
+            Exception capturedException = null;
+
+            Thread thread = new Thread(() =>
+            {
+                try
+                {
+                    Clipboard.SetDataObject(text, true);
+                    success = true;
+                }
+                catch (Exception ex)
+                {
+                    capturedException = ex;
+                }
+            });
+
+            thread.SetApartmentState(ApartmentState.STA);
+            thread.IsBackground = true;
+            thread.Start();
+            thread.Join();
+
+            exception = capturedException;
+            return success;
+        }
+    }
+}