diff --git a/B07_DesignDetail/B07_DesignDetail_Engine_Frame_Export.py b/B07_DesignDetail/B07_DesignDetail_Engine_Frame_Export.py
index e95c3b958..da64d98ee 100644
--- a/B07_DesignDetail/B07_DesignDetail_Engine_Frame_Export.py
+++ b/B07_DesignDetail/B07_DesignDetail_Engine_Frame_Export.py
@@ -195,6 +195,9 @@ def _add_entity(
         start_angle = shape.get("startAngle")
         end_angle = shape.get("endAngle")
         if isinstance(start_angle, (int, float)) and isinstance(end_angle, (int, float)):
+            # DXF 호는 늘 반시계 — 시계방향 호는 시작 · 끝을 바꿔야 같은 작은 호.
+            if shape.get("counterClockwise") is False:
+                start_angle, end_angle = end_angle, start_angle
             space.add_arc(
                 center,
                 radius,
diff --git a/B07_DesignDetail/B07_DesignDetail_Engine_Frame_Import.py b/B07_DesignDetail/B07_DesignDetail_Engine_Frame_Import.py
index 8472d92fd..673df9a21 100644
--- a/B07_DesignDetail/B07_DesignDetail_Engine_Frame_Import.py
+++ b/B07_DesignDetail/B07_DesignDetail_Engine_Frame_Import.py
@@ -29,6 +29,8 @@ from uuid import NAMESPACE_URL, uuid5
 
 import ezdxf
 from ezdxf import colors as ezdxf_colors
+from ezdxf import path as ezdxf_path
+from ezdxf.enums import TextEntityAlignment
 from ezdxf.lldxf.encoding import decode_dxf_unicode, has_dxf_unicode
 
 logger = logging.getLogger(__name__)
@@ -38,6 +40,8 @@ _DEFAULT_COLOR = "#f5f7fa"
 # 곡선을 선분으로 풀 때 허용 오차(mm) — 도각 크기(840x594mm)에서 눈에 띄지 않는다.
 _FLATTEN_MM = 0.2
 _MAX_ENTITIES = 20000
+# 블록 속 블록을 풀 깊이 — 자기를 품는 깨진 블록에서 끝없이 돌지 않게.
+_MAX_BLOCK_DEPTH = 16
 
 
 # 프로그램에 함께 담은 LibreDWG 자리 — `B07_DesignDetail/openwebcad/tools/libredwg/`.
@@ -117,16 +121,26 @@ def _plain(label: str) -> str:
     return decode_dxf_unicode(label) if has_dxf_unicode(label) else label
 
 
-def _text(index: int, entity: Any, label: str, insert: Any, height: float) -> dict[str, Any]:
-    rotation = float(getattr(entity.dxf, "rotation", 0.0) or 0.0)
+def _text(
+    index: int,
+    entity: Any,
+    label: str,
+    insert: Any,
+    height: float,
+    direction: Any = None,
+    align: str = "left",
+) -> dict[str, Any]:
+    if direction is None:
+        rotation = float(getattr(entity.dxf, "rotation", 0.0) or 0.0)
+        direction = (cos(radians(rotation)), sin(radians(rotation)))
     return {
         **_base(index, entity, "Text"),
         "shapeData": {
             "label": _plain(label),
             "basePoint": _point(insert[0], insert[1]),
             "options": {
-                "textDirection": _point(cos(radians(rotation)), sin(radians(rotation))),
-                "textAlign": "left",
+                "textDirection": _point(direction[0], direction[1]),
+                "textAlign": align,
                 "textColor": _color(entity),
                 "fontSize": float(height) or 3.0,
                 "fontFamily": "sans-serif",
@@ -143,16 +157,50 @@ def _flatten(entity: Any) -> list[Any] | None:
         return None
 
 
+def _polyline_points(entity: Any) -> tuple[list[Any], bool]:
+    """폴리선 → WCS 점열. bulge(호 마디)는 펴고 OCS(압출 −Z 거울 블록)는 WCS 로.
+
+    `make_path` 가 닫힌 폴리선의 닫는 마디까지 넣으므로 닫힘 표시는 False.
+    면 · 메시 POLYLINE 처럼 경로로 못 바꾸면 꼭짓점을 그대로 잇는다.
+    """
+    try:
+        return list(ezdxf_path.make_path(entity).flattening(_FLATTEN_MM)), False
+    except Exception:
+        if entity.dxftype() == "LWPOLYLINE":
+            return list(entity.get_points("xy")), bool(entity.closed)
+        return [vertex.dxf.location for vertex in entity.vertices], bool(entity.is_closed)
+
+
+# DXF 가로 정렬 → CAD 글 정렬. 맞춤(ALIGNED · FIT)은 첫 점에서 왼쪽.
+_TEXT_ALIGN = {
+    TextEntityAlignment.CENTER: "center",
+    TextEntityAlignment.MIDDLE: "center",
+    TextEntityAlignment.TOP_CENTER: "center",
+    TextEntityAlignment.MIDDLE_CENTER: "center",
+    TextEntityAlignment.BOTTOM_CENTER: "center",
+    TextEntityAlignment.RIGHT: "right",
+    TextEntityAlignment.TOP_RIGHT: "right",
+    TextEntityAlignment.MIDDLE_RIGHT: "right",
+    TextEntityAlignment.BOTTOM_RIGHT: "right",
+}
+
+
+def _text_placement(entity: Any) -> tuple[Any, Any, str]:
+    """TEXT 의 (WCS 기준점, WCS 방향, 가로 정렬). 정렬점 · OCS(압출 −Z)를 따른다."""
+    align, first, _second = entity.get_placement()
+    ocs = entity.ocs()
+    rotation = radians(float(entity.dxf.rotation or 0.0))
+    direction = ocs.to_wcs((cos(rotation), sin(rotation), 0.0))
+    return ocs.to_wcs(first), direction, _TEXT_ALIGN.get(align, "left")
+
+
 def _convert_entity(index: int, entity: Any) -> list[dict[str, Any]]:
     kind = entity.dxftype()
     if kind == "LINE":
         return [_line(index, entity, entity.dxf.start, entity.dxf.end)]
-    if kind == "LWPOLYLINE":
-        shape = _polyline(index, entity, list(entity.get_points("xy")), bool(entity.closed))
-        return [shape] if shape else []
-    if kind == "POLYLINE":
-        points = [vertex.dxf.location for vertex in entity.vertices]
-        shape = _polyline(index, entity, points, bool(entity.is_closed))
+    if kind in ("LWPOLYLINE", "POLYLINE"):
+        points, closed = _polyline_points(entity)
+        shape = _polyline(index, entity, points, closed)
         return [shape] if shape else []
     if kind in ("CIRCLE", "ARC", "ELLIPSE", "SPLINE"):
         points = _flatten(entity)
@@ -172,24 +220,32 @@ def _convert_entity(index: int, entity: Any) -> list[dict[str, Any]]:
         label = str(entity.dxf.text or "").strip()
         if not label:
             return []
-        return [_text(index, entity, label, entity.dxf.insert, float(entity.dxf.height or 3.0))]
+        insert, direction, align = _text_placement(entity)
+        height = float(entity.dxf.height or 3.0)
+        return [_text(index, entity, label, insert, height, direction, align)]
     if kind == "MTEXT":
         label = str(entity.plain_text() or "").strip()
         if not label:
             return []
         height = float(entity.dxf.char_height or 3.0)
-        return [_text(index, entity, label, entity.dxf.insert, height)]
+        # 붙임점 1~9 = 위 · 가운데 · 아래 줄의 왼 · 가운데 · 오른.
+        align = ("left", "center", "right")[(int(entity.dxf.attachment_point or 1) - 1) % 3]
+        return [_text(index, entity, label, entity.dxf.insert, height, align=align)]
     return []
 
 
-def _expand(entity: Any) -> list[Any]:
-    """블록·치수처럼 속에 도형을 품은 것은 풀어서 낱개로 만든다. 못 풀면 버린다."""
+def _expand(entity: Any, depth: int = 0) -> list[Any]:
+    """블록·치수처럼 속에 도형을 품은 것은 풀어서 낱개로 — 블록 속 블록까지. 못 풀면 버린다."""
     if entity.dxftype() in ("INSERT", "DIMENSION", "LEADER", "MULTILEADER"):
+        if depth >= _MAX_BLOCK_DEPTH:
+            logger.info("B07 도각 불러오기 — 블록이 %d 겹 넘게 겹쳐 건너뜀", _MAX_BLOCK_DEPTH)
+            return []
         try:
-            return list(entity.virtual_entities())
+            inner = list(entity.virtual_entities())
         except Exception:
             logger.info("B07 도각 불러오기 — %s 는 풀지 못해 건너뜀", entity.dxftype())
             return []
+        return [item for child in inner for item in _expand(child, depth + 1)]
     return [entity]
 
 
diff --git a/B07_DesignDetail/openwebcad/src/entities/ArcEntity.test.ts b/B07_DesignDetail/openwebcad/src/entities/ArcEntity.test.ts
index c094d88b7..75114f281 100644
--- a/B07_DesignDetail/openwebcad/src/entities/ArcEntity.test.ts
+++ b/B07_DesignDetail/openwebcad/src/entities/ArcEntity.test.ts
@@ -1,7 +1,10 @@
 import { type Arc, Point } from '@flatten-js/core';
 import { describe, expect, it } from 'vitest';
 import { EPSILON } from '../App.consts.ts';
+import type { DrawController } from '../drawControllers/DrawController.ts';
+import { mirrorPointOverAxis } from '../helpers/mirror-point-over-axis.ts';
 import { ArcEntity } from './ArcEntity.ts';
+import { LineEntity } from './LineEntity.ts';
 
 describe('ArcEntity.distanceTo', () => {
 	/**
@@ -57,3 +60,62 @@ describe('ArcEntity.distanceTo', () => {
 		expect(distanceInfo[0]).toBeLessThan(1);
 	});
 });
+
+describe('ArcEntity 대칭 · 그리기 · 복제(84-3)', () => {
+	const middle = (entity: ArcEntity) => {
+		const arc = entity.getShape() as Arc;
+		return arc.pointAtLength(arc.length / 2) as Point;
+	};
+	const mirrorOver = (axisEnd: Point) => {
+		const arc = new ArcEntity('layer1', new Point(2, 1), 1, 0, Math.PI / 2, true);
+		const before = arc.getShape() as Arc;
+		const axis = new LineEntity('layer1', new Point(0, 0), axisEnd);
+		const expected = [before.start, middle(arc), before.end].map((point) =>
+			mirrorPointOverAxis(point, axis)
+		);
+		arc.mirror(axis);
+		const after = arc.getShape() as Arc;
+		return { expected, actual: [after.start, middle(arc), after.end], length: after.length };
+	};
+
+	for (const [name, axisEnd] of [
+		['세로축', new Point(0, 1)],
+		['가로축', new Point(1, 0)],
+		['45° 축', new Point(1, 1)],
+		['30° 축', new Point(Math.cos(Math.PI / 6), Math.sin(Math.PI / 6))],
+	] as const) {
+		it(`${name} 대칭 — 끝점 · 가운데 점이 대칭 자리 · 작은 호 그대로`, () => {
+			const { expected, actual, length } = mirrorOver(axisEnd);
+			for (let index = 0; index < 3; index++) {
+				expect(actual[index].x).toBeCloseTo(expected[index].x, 9);
+				expect(actual[index].y).toBeCloseTo(expected[index].y, 9);
+			}
+			expect(length).toBeCloseTo(Math.PI / 2, 9);
+		});
+	}
+
+	it('시작각이 음수 · 끝각 0 인 호 — 끝각을 2π 로 바꾸지 않음(온 원으로 안 그림)', () => {
+		const arc = new ArcEntity('layer1', new Point(0, 0), 1, -Math.PI / 2, 0, true);
+		const calls: number[][] = [];
+		const controller = {
+			setLineStyles: () => {},
+			drawArc: (_c: Point, _r: number, start: number, end: number) => calls.push([start, end]),
+		} as unknown as DrawController;
+		arc.draw(controller);
+		expect(calls[0][1] - calls[0][0]).toBeCloseTo(Math.PI / 2, 9);
+	});
+
+	it('복제 — 색 · 층 · 선 꼴 그대로', () => {
+		const arc = new ArcEntity('구조물', new Point(0, 0), 1, 0, 1, false);
+		arc.lineColor = '#ff0000';
+		arc.lineWidth = 3;
+		arc.lineDash = [2, 1];
+		const copy = arc.clone();
+		expect([copy.layerId, copy.lineColor, copy.lineWidth, copy.lineDash]).toEqual([
+			'구조물',
+			'#ff0000',
+			3,
+			[2, 1],
+		]);
+	});
+});
diff --git a/B07_DesignDetail/openwebcad/src/entities/ArcEntity.ts b/B07_DesignDetail/openwebcad/src/entities/ArcEntity.ts
index f5e9e49c8..43b522328 100644
--- a/B07_DesignDetail/openwebcad/src/entities/ArcEntity.ts
+++ b/B07_DesignDetail/openwebcad/src/entities/ArcEntity.ts
@@ -60,8 +60,9 @@ export class ArcEntity implements Entity, StartAndEndpointEntity {
 		drawController.drawArc(
 			this.arc.center,
 			this.arc.r.valueOf(),
-			this.arc?.startAngle || 0,
-			this.arc?.endAngle || 2 * Math.PI,
+			this.arc.startAngle,
+			// 끝각 = 시작각 ± 쓸어간 각 — 끝각 0 을 2π 로 바꾸면 시작각이 음수인 호(대칭 뒤)가 온 원으로 그려짐.
+			this.arc.startAngle + (this.arc.counterClockwise ? this.arc.sweep : -this.arc.sweep),
 			this.arc.counterClockwise
 		);
 	}
@@ -87,12 +88,13 @@ export class ArcEntity implements Entity, StartAndEndpointEntity {
 
 	public mirror(mirrorAxis: LineEntity) {
 		const mirroredCenter = mirrorPointOverAxis(this.arc.center, mirrorAxis);
-		mirrorAxis.getAngle();
+		// 축 각 θ 에 대한 대칭 — 각 α → 2θ − α · 도는 방향 반대.
+		const doubleAxisAngle = 2 * mirrorAxis.getAngle();
 		this.arc = new Arc(
 			mirroredCenter,
 			this.arc.r.valueOf(),
-			-this.arc.startAngle,
-			-this.arc.endAngle,
+			doubleAxisAngle - this.arc.startAngle,
+			doubleAxisAngle - this.arc.endAngle,
 			!this.arc.counterClockwise
 		);
 	}
@@ -100,14 +102,13 @@ export class ArcEntity implements Entity, StartAndEndpointEntity {
 	public clone(): Entity {
 		if (this.arc) {
 			const { center, r, startAngle, endAngle, counterClockwise } = this.arc;
-			return new ArcEntity(
-				getActiveLayerId(),
-				center,
-				r.valueOf(),
-				startAngle,
-				endAngle,
-				counterClockwise
-			);
+			// 색 · 층 · 선 꼴은 그대로 — 폴리선 자식도 이 길로 복제됨.
+			const copy = new ArcEntity(this.layerId, center, r.valueOf(), startAngle, endAngle, counterClockwise);
+			copy.lineColor = this.lineColor;
+			copy.lineWidth = this.lineWidth;
+			copy.lineDash = this.lineDash;
+			copy.opacity = this.opacity;
+			return copy;
 		}
 		return this;
 	}
diff --git a/B07_DesignDetail/openwebcad/src/entities/LineEntity.ts b/B07_DesignDetail/openwebcad/src/entities/LineEntity.ts
index 590a5d1bf..bed94b431 100644
--- a/B07_DesignDetail/openwebcad/src/entities/LineEntity.ts
+++ b/B07_DesignDetail/openwebcad/src/entities/LineEntity.ts
@@ -76,7 +76,13 @@ export class LineEntity implements Entity, StartAndEndpointEntity {
 	}
 
 	public clone(): LineEntity {
-		return new LineEntity(getActiveLayerId(), this.segment.clone());
+		// 색 · 층 · 선 꼴은 그대로 — 폴리선 자식도 이 길로 복제됨.
+		const copy = new LineEntity(this.layerId, this.segment.clone());
+		copy.lineColor = this.lineColor;
+		copy.lineWidth = this.lineWidth;
+		copy.lineDash = this.lineDash;
+		copy.opacity = this.opacity;
+		return copy;
 	}
 
 	public intersectsWithBox(box: Box): boolean {
diff --git a/B07_DesignDetail/openwebcad/src/tools/array-tool.ts b/B07_DesignDetail/openwebcad/src/tools/array-tool.ts
index 829a3454a..2fd83edff 100644
--- a/B07_DesignDetail/openwebcad/src/tools/array-tool.ts
+++ b/B07_DesignDetail/openwebcad/src/tools/array-tool.ts
@@ -16,6 +16,7 @@ import {
 } from '../state';
 import { Tool } from '../tools';
 import { CopyAction } from './copy-tool.ts';
+import { cloneKeepingLook } from './move-tool.helpers.ts';
 import { selectToolStateMachine } from './select-tool.ts';
 import type {
 	AbsolutePointInputEvent,
@@ -337,7 +338,7 @@ export const arrayToolStateMachine = createMachine(
 						const y = distanceVector.y * i;
 						resultEntities.push(
 							...getSelectedEntities().map((entity) => {
-								const clone = entity.clone();
+								const clone = cloneKeepingLook(entity);
 								clone.move(x, y);
 								return clone;
 							})
@@ -346,7 +347,7 @@ export const arrayToolStateMachine = createMachine(
 						const angleRad = context.angleStep * i * TO_RADIANS;
 						resultEntities.push(
 							...getSelectedEntities().map((entity) => {
-								const clone = entity.clone();
+								const clone = cloneKeepingLook(entity);
 								clone.rotate(context.pivotPoint as Point, angleRad);
 								return clone;
 							})
diff --git a/B07_DesignDetail/openwebcad/src/tools/copy-tool.ts b/B07_DesignDetail/openwebcad/src/tools/copy-tool.ts
index 7ef246f2f..73b6811fb 100644
--- a/B07_DesignDetail/openwebcad/src/tools/copy-tool.ts
+++ b/B07_DesignDetail/openwebcad/src/tools/copy-tool.ts
@@ -17,7 +17,7 @@ import type { Entity } from '../entities/Entity';
 import { compact } from 'es-toolkit';
 import { LineEntity } from '../entities/LineEntity';
 import { GUIDE_LINE_COLOR, GUIDE_LINE_STYLE, GUIDE_LINE_WIDTH } from '../App.consts';
-import { moveEntities } from './move-tool.helpers';
+import { cloneKeepingLook, moveEntities } from './move-tool.helpers';
 
 export interface CopyContext extends ToolContext {
 	startPoint: Point | null;
@@ -208,7 +208,7 @@ export const copyToolStateMachine = createMachine(
 				return {
 					startPoint: context.startPoint,
 					// Make a copy of the selected entities before copying them, so we can restore them when the user cancels the copy action
-					originalSelectedEntities: compact(selectedEntities.map((entity) => entity.clone())),
+					originalSelectedEntities: compact(selectedEntities.map((entity) => cloneKeepingLook(entity))),
 					copiedEntities: selectedEntities,
 				};
 			}),
@@ -221,7 +221,7 @@ export const copyToolStateMachine = createMachine(
 
 				// Copy the entities to the new location
 				// Draw all selected entities according to translation vector, so the user gets visual feedback of where the entities will be copied;
-				const movedEntities = context.originalSelectedEntities.map((entity) => entity.clone());
+				const movedEntities = context.originalSelectedEntities.map((entity) => cloneKeepingLook(entity));
 				moveEntities(
 					movedEntities,
 					endPointTemp.x - context.startPoint.x,
@@ -246,15 +246,15 @@ export const copyToolStateMachine = createMachine(
 
 				// Copy the entities one final time
 				const currentEndPoint = (event as MouseClickEvent).worldMouseLocation;
-				const copiedEntities = context.originalSelectedEntities.map((entity) => entity.clone());
+				const copiedEntities = context.originalSelectedEntities.map((entity) => cloneKeepingLook(entity));
 				moveEntities(
 					copiedEntities,
 					currentEndPoint.x - context.startPoint.x,
 					currentEndPoint.y - context.startPoint.y
 				);
 
-				// Switch the copied entities back from the ghost helper entities to the real entities
-				addEntities([...context.originalSelectedEntities, ...copiedEntities], true);
+				// 원본은 목록에 그대로 있음 — 복사본만 더함(원본까지 더하면 누를 때마다 원본이 겹겹이 쌓임).
+				addEntities(copiedEntities, true);
 			},
 			[CopyAction.DESELECT_ENTITIES]: assign(() => {
 				setGhostHelperEntities([]);
diff --git a/B07_DesignDetail/openwebcad/src/tools/move-tool.helpers.ts b/B07_DesignDetail/openwebcad/src/tools/move-tool.helpers.ts
index 97c15c503..c05b9451c 100644
--- a/B07_DesignDetail/openwebcad/src/tools/move-tool.helpers.ts
+++ b/B07_DesignDetail/openwebcad/src/tools/move-tool.helpers.ts
@@ -1,4 +1,5 @@
 import type { Entity } from '../entities/Entity';
+import { copyStyle } from './modify/modify.helpers';
 
 /**
  * Move entities by the difference between the start and end points
@@ -11,3 +12,17 @@ export function moveEntities(entities: Entity[], deltaX: number, deltaY: number)
 		entity.move(deltaX, deltaY);
 	}
 }
+
+/**
+ * 복제해도 색 · 층 · 선 꼴 · 투명도를 그대로 둔다(`clone()` 은 활성 층 · 흰색으로 새로 만듦).
+ * `inPlace` = 옮기기 · 크기 · 회전처럼 같은 도형을 갈아 끼울 때 — id · 묶음까지 그대로.
+ */
+export function cloneKeepingLook(entity: Entity, inPlace = false): Entity {
+	const copy = copyStyle(entity, entity.clone());
+	copy.opacity = entity.opacity;
+	if (inPlace) {
+		copy.id = entity.id;
+		copy.groupId = entity.groupId;
+	}
+	return copy;
+}
diff --git a/B07_DesignDetail/openwebcad/src/tools/move-tool.ts b/B07_DesignDetail/openwebcad/src/tools/move-tool.ts
index 346be9091..ba19c7073 100644
--- a/B07_DesignDetail/openwebcad/src/tools/move-tool.ts
+++ b/B07_DesignDetail/openwebcad/src/tools/move-tool.ts
@@ -16,7 +16,7 @@ import { assign, createMachine, sendTo } from 'xstate';
 import { selectToolStateMachine } from './select-tool';
 import type { Entity } from '../entities/Entity';
 import { compact } from 'es-toolkit';
-import { moveEntities } from './move-tool.helpers';
+import { cloneKeepingLook, moveEntities } from './move-tool.helpers';
 import { LineEntity } from '../entities/LineEntity';
 import { GUIDE_LINE_COLOR, GUIDE_LINE_STYLE, GUIDE_LINE_WIDTH } from '../App.consts';
 
@@ -211,7 +211,7 @@ export const moveToolStateMachine = createMachine(
 				return {
 					startPoint: context.startPoint,
 					// Make a copy of the selected entities before moving them, so we can restore them when the user cancels the move action
-					originalSelectedEntities: compact(selectedEntities.map((entity) => entity.clone())),
+					originalSelectedEntities: compact(selectedEntities.map((entity) => cloneKeepingLook(entity, true))),
 					movedEntities: selectedEntities,
 				};
 			}),
@@ -224,7 +224,7 @@ export const moveToolStateMachine = createMachine(
 
 				// Move the entities to the new location
 				// Draw all selected entities according to translation vector, so the user gets visual feedback of where the entities will be moved;
-				const movedEntities = context.originalSelectedEntities.map((entity) => entity.clone());
+				const movedEntities = context.originalSelectedEntities.map((entity) => cloneKeepingLook(entity, true));
 				moveEntities(
 					movedEntities,
 					endPointTemp.x - context.startPoint.x,
diff --git a/B07_DesignDetail/openwebcad/src/tools/rotate-tool.ts b/B07_DesignDetail/openwebcad/src/tools/rotate-tool.ts
index 0d792a54e..46888d7a5 100644
--- a/B07_DesignDetail/openwebcad/src/tools/rotate-tool.ts
+++ b/B07_DesignDetail/openwebcad/src/tools/rotate-tool.ts
@@ -16,6 +16,7 @@ import { selectToolStateMachine } from './select-tool';
 import type { Entity } from '../entities/Entity';
 import { compact } from 'es-toolkit';
 import { rotateEntities } from './rotate-tool.helpers';
+import { cloneKeepingLook } from './move-tool.helpers';
 
 export interface RotateContext extends ToolContext {
 	rotationOrigin: Point | null;
@@ -231,7 +232,7 @@ export const rotateToolStateMachine = createMachine(
 				return {
 					...context,
 					// Make a copy of the selected entities before rotating them, so we can restore them when the user cancels the rotate action
-					originalSelectedEntities: compact(selectedEntities.map((entity) => entity.clone())),
+					originalSelectedEntities: compact(selectedEntities.map((entity) => cloneKeepingLook(entity, true))),
 				};
 			}),
 			[RotateAction.DRAW_TEMP_ROTATE_ENTITIES]: ({ context, event }) => {
@@ -245,7 +246,7 @@ export const rotateToolStateMachine = createMachine(
 
 				// Draw all selected entities according to rotate vector, so the user gets visual feedback of where the entities will be end up after rotating
 				const rotatedEntities = compact(
-					context.originalSelectedEntities.map((entity) => entity.clone())
+					context.originalSelectedEntities.map((entity) => cloneKeepingLook(entity, true))
 				);
 				rotateEntities(
 					rotatedEntities,
@@ -264,7 +265,7 @@ export const rotateToolStateMachine = createMachine(
 
 				// Rotate the entities one final time
 				const rotatedEntities = compact(
-					context.originalSelectedEntities.map((entity) => entity.clone())
+					context.originalSelectedEntities.map((entity) => cloneKeepingLook(entity, true))
 				);
 				rotateEntities(
 					rotatedEntities,
diff --git a/B07_DesignDetail/openwebcad/src/tools/scale-tool.ts b/B07_DesignDetail/openwebcad/src/tools/scale-tool.ts
index 99b5ed11c..660a885b2 100644
--- a/B07_DesignDetail/openwebcad/src/tools/scale-tool.ts
+++ b/B07_DesignDetail/openwebcad/src/tools/scale-tool.ts
@@ -16,6 +16,7 @@ import { selectToolStateMachine } from './select-tool';
 import type { Entity } from '../entities/Entity';
 import { compact } from 'es-toolkit';
 import { scaleEntities } from './scale-tool.helpers';
+import { cloneKeepingLook } from './move-tool.helpers';
 
 export interface ScaleContext extends ToolContext {
 	baseVectorStartPoint: Point | null;
@@ -234,7 +235,7 @@ export const scaleToolStateMachine = createMachine(
 				return {
 					...context,
 					// Make a copy of the selected entities before scaling them, so we can restore them when the user cancels the scale action
-					originalSelectedEntities: compact(selectedEntities.map((entity) => entity.clone())),
+					originalSelectedEntities: compact(selectedEntities.map((entity) => cloneKeepingLook(entity, true))),
 				};
 			}),
 			[ScaleAction.DRAW_TEMP_SCALE_ENTITIES]: ({ context, event }) => {
@@ -248,7 +249,7 @@ export const scaleToolStateMachine = createMachine(
 
 				// Draw all selected entities according to scale vector, so the user gets visual feedback of where the entities will be end up after scaling
 				const scaledEntities = compact(
-					context.originalSelectedEntities.map((entity) => entity.clone())
+					context.originalSelectedEntities.map((entity) => cloneKeepingLook(entity, true))
 				);
 				scaleEntities(
 					scaledEntities,
@@ -267,7 +268,7 @@ export const scaleToolStateMachine = createMachine(
 
 				// Scale the entities one final time
 				const scaledEntities = compact(
-					context.originalSelectedEntities.map((entity) => entity.clone())
+					context.originalSelectedEntities.map((entity) => cloneKeepingLook(entity, true))
 				);
 				scaleEntities(
 					scaledEntities,
diff --git a/resources/tester/cad/clone-keeps-look.test.ts b/resources/tester/cad/clone-keeps-look.test.ts
new file mode 100644
index 000000000..bb39eeb68
--- /dev/null
+++ b/resources/tester/cad/clone-keeps-look.test.ts
@@ -0,0 +1,61 @@
+/**
+ * 옮기기 · 크기 · 회전 · 복사 · 배열 복제가 색 · 층 · 선 꼴을 지키는지(84-3).
+ * 실행: cd B07_DesignDetail/openwebcad && npx vitest run --config <include 를 이 파일로 바꾼 vitest.tmp.config.ts>
+ */
+import { Point } from "@flatten-js/core";
+import { describe, expect, it } from "vitest";
+import { LineEntity } from "../../../B07_DesignDetail/openwebcad/src/entities/LineEntity";
+import { PointEntity } from "../../../B07_DesignDetail/openwebcad/src/entities/PointEntity";
+import { PolyLineEntity } from "../../../B07_DesignDetail/openwebcad/src/entities/PolyLineEntity";
+import { TextEntity } from "../../../B07_DesignDetail/openwebcad/src/entities/TextEntity";
+import { cloneKeepingLook } from "../../../B07_DesignDetail/openwebcad/src/tools/move-tool.helpers";
+import type { Entity } from "../../../B07_DesignDetail/openwebcad/src/entities/Entity";
+
+const styled = <T extends Entity>(entity: T): T => {
+  entity.lineColor = "#ff0000";
+  entity.lineWidth = 2;
+  entity.lineDash = [4, 2];
+  entity.opacity = 0.5;
+  entity.groupId = "g1";
+  return entity;
+};
+const look = (entity: Entity) => [
+  entity.layerId,
+  entity.lineColor,
+  entity.lineWidth,
+  entity.lineDash,
+  entity.opacity,
+];
+const LOOK = ["구조물", "#ff0000", 2, [4, 2], 0.5];
+
+describe("cloneKeepingLook", () => {
+  const samples: [string, () => Entity][] = [
+    ["선", () => styled(new LineEntity("구조물", new Point(0, 0), new Point(1, 0)))],
+    ["점", () => styled(new PointEntity("구조물", new Point(1, 1)))],
+    ["글", () => styled(new TextEntity("구조물", "배수관", new Point(0, 0)))],
+  ];
+  for (const [name, make] of samples) {
+    it(`${name} — 옮기기(inPlace) 는 id · 묶음 · 색 · 층 그대로`, () => {
+      const source = make();
+      const copy = cloneKeepingLook(source, true);
+      copy.move(5, 5);
+      expect(look(copy)).toEqual(LOOK);
+      expect([copy.id, copy.groupId]).toEqual([source.id, "g1"]);
+    });
+    it(`${name} — 복사는 새 id · 색 · 층 그대로`, () => {
+      const source = make();
+      const copy = cloneKeepingLook(source);
+      expect(look(copy)).toEqual(LOOK);
+      expect(copy.id).not.toBe(source.id);
+    });
+  }
+
+  it("폴리선 — 자식 선까지 색 · 층 그대로(크기 바꿈 뒤)", () => {
+    const child = styled(new LineEntity("구조물", new Point(0, 0), new Point(1, 0)));
+    const polyline = styled(new PolyLineEntity("구조물", [child]));
+    const copy = cloneKeepingLook(polyline, true) as PolyLineEntity;
+    copy.scale(new Point(0, 0), 2);
+    expect(look(copy)).toEqual(LOOK);
+    expect(look(copy.getEntities()[0])).toEqual(LOOK);
+  });
+});
diff --git a/resources/tester/test_b07_frame_import_shapes.py b/resources/tester/test_b07_frame_import_shapes.py
new file mode 100644
index 000000000..a93942d27
--- /dev/null
+++ b/resources/tester/test_b07_frame_import_shapes.py
@@ -0,0 +1,135 @@
+"""B07 도면 불러오기 — 호 · bulge 폴리선 · 거울 블록 · 겹 블록 견본 DXF(84-2) · 내보내기 시계방향 호(84-3).
+
+견본은 ezdxf 로 그 자리에서 만들어 끌어다 놓기 길(`drawing_file_to_entities`)로 읽는다.
+"""
+
+from __future__ import annotations
+
+import io
+import math
+
+import ezdxf
+from ezdxf.enums import TextEntityAlignment
+
+from B07_DesignDetail import B07_DesignDetail_Engine_Frame_Export as export
+from B07_DesignDetail.B07_DesignDetail_Engine_Frame_Import import drawing_file_to_entities
+
+
+def _read(doc: ezdxf.document.Drawing) -> list[dict]:
+    stream = io.StringIO()
+    doc.write(stream)
+    entities, _layers = drawing_file_to_entities("견본.dxf", stream.getvalue().encode("utf-8"))
+    return entities
+
+
+def _points(polyline: dict) -> list[tuple[float, float]]:
+    children = polyline["children"]
+    points = [
+        (c["shapeData"]["startPoint"]["x"], c["shapeData"]["startPoint"]["y"]) for c in children
+    ]
+    last = children[-1]["shapeData"]["endPoint"]
+    return [*points, (last["x"], last["y"])]
+
+
+def _on_circle(points, cx: float, cy: float, r: float) -> bool:
+    return all(abs(math.hypot(x - cx, y - cy) - r) < 0.21 for x, y in points)
+
+
+def test_호는_1사분면_작은_호():
+    doc = ezdxf.new()
+    doc.modelspace().add_arc((0, 0), 10, 0, 90)
+    (arc,) = _read(doc)
+    points = _points(arc)
+    assert _on_circle(points, 0, 0, 10)
+    assert points[0] == (10.0, 0.0) and math.isclose(points[-1][0], 0, abs_tol=1e-9)
+    assert all(x >= -1e-9 and y >= -1e-9 for x, y in points)  # 큰 호(270°)로 뒤집히지 않음
+
+
+def test_bulge_폴리선은_호로_펴짐():
+    doc = ezdxf.new()
+    space = doc.modelspace()
+    # 반원(bulge 1 · 반시계 → 아래로) · 작은 호(bulge −0.2 · 시계 → 위로 1)
+    space.add_lwpolyline([(0, 0, 0, 0, 1), (10, 0)], format="xyseb")
+    space.add_lwpolyline([(0, 20, 0, 0, -0.2), (10, 20)], format="xyseb")
+    half, small = _read(doc)
+    half_points = _points(half)
+    assert len(half_points) > 3 and _on_circle(half_points, 5, 0, 5)
+    assert min(y for _x, y in half_points) < -4.9
+    small_points = _points(small)
+    assert len(small_points) > 3
+    assert math.isclose(max(y for _x, y in small_points), 21.0, abs_tol=0.01)  # 처짐 = 0.2 × 10 / 2
+    assert min(y for _x, y in small_points) >= 20 - 1e-9
+
+
+def test_거울_블록은_WCS_자리():
+    doc = ezdxf.new()
+    block = doc.blocks.new("거울")
+    block.add_lwpolyline([(0, 0, 0, 0, -0.2), (10, 0)], format="xyseb")
+    block.add_arc((20, 0), 2, 0, 90)
+    block.add_text("가", dxfattribs={"height": 2.5}).set_placement((2, 3))
+    doc.modelspace().add_blockref("거울", (100, 0), dxfattribs={"xscale": -1})
+    by_type: dict[str, list[dict]] = {}
+    for entity in _read(doc):
+        by_type.setdefault(entity["type"], []).append(entity)
+    bulge, arc = by_type["PolyLine"]
+    bulge_points = _points(bulge)
+    assert (
+        min(x for x, _y in bulge_points) >= 90 - 1e-9
+        and max(x for x, _y in bulge_points) <= 100 + 1e-9
+    )
+    assert math.isclose(max(y for _x, y in bulge_points), 1.0, abs_tol=0.01)  # 위로 그대로
+    arc_points = _points(arc)
+    assert _on_circle(arc_points, 80, 0, 2)
+    assert all(x <= 80 + 1e-9 and y >= -1e-9 for x, y in arc_points)  # 2사분면으로 대칭
+    (text,) = by_type["Text"]
+    assert text["shapeData"]["basePoint"] == {"x": 98.0, "y": 3.0}
+
+
+def test_겹_블록도_풀림():
+    doc = ezdxf.new()
+    doc.blocks.new("속").add_line((0, 0), (1, 0))
+    doc.blocks.new("겉").add_blockref("속", (5, 0))
+    doc.modelspace().add_blockref("겉", (10, 0))
+    (line,) = _read(doc)
+    assert line["type"] == "Line"
+    assert line["shapeData"] == {
+        "startPoint": {"x": 15.0, "y": 0.0},
+        "endPoint": {"x": 16.0, "y": 0.0},
+    }
+
+
+def test_TEXT_정렬점_자리():
+    doc = ezdxf.new()
+    space = doc.modelspace()
+    space.add_text("가운데", dxfattribs={"height": 2}).set_placement(
+        (50, 5), align=TextEntityAlignment.MIDDLE_CENTER
+    )
+    space.add_text("오른", dxfattribs={"height": 2}).set_placement(
+        (80, 5), align=TextEntityAlignment.BOTTOM_RIGHT
+    )
+    center, right = _read(doc)
+    assert center["shapeData"]["basePoint"] == {"x": 50.0, "y": 5.0}
+    assert center["shapeData"]["options"]["textAlign"] == "center"
+    assert right["shapeData"]["basePoint"] == {"x": 80.0, "y": 5.0}
+    assert right["shapeData"]["options"]["textAlign"] == "right"
+
+
+def test_내보내기_시계방향_작은_호(tmp_path):
+    arc = {
+        "type": "Arc",
+        "layerId": "기본",
+        "shapeData": {
+            "center": {"x": 0, "y": 0},
+            "radius": 1,
+            "startAngle": math.pi / 2,
+            "endAngle": 0,
+            "counterClockwise": False,
+        },
+    }
+    raw, skipped = export.drawing_to_dxf({"entities": [arc], "layers": []})
+    assert skipped == {}
+    path = tmp_path / "out.dxf"
+    path.write_bytes(raw)
+    (out,) = ezdxf.readfile(path).modelspace().query("ARC")
+    span = (out.dxf.end_angle - out.dxf.start_angle) % 360
+    assert math.isclose(span, 90) and math.isclose(out.dxf.start_angle % 360, 0, abs_tol=1e-9)