diff --git a/resources/views/rd/fire-shutter-drawing/index.blade.php b/resources/views/rd/fire-shutter-drawing/index.blade.php
index d4f435bf..c47716a1 100644
--- a/resources/views/rd/fire-shutter-drawing/index.blade.php
+++ b/resources/views/rd/fire-shutter-drawing/index.blade.php
@@ -1058,12 +1058,33 @@ function fs3dBuild() {
         meshes.shaft.position.set(0, shaftY, 0);
         scene.add(meshes.shaft);
 
-        // === MOTOR (outside bracket, connected via 복주머니) ===
-        const motorGeo = new THREE.BoxGeometry(150, 100, 120);
+        // === MOTOR (브라켓 위에 3개 다리로 안착, 샤프트 방향으로 위치) ===
+        meshes.motor = new THREE.Group();
         const motorMat = new THREE.MeshStandardMaterial({ color: 0x2563eb, metalness: 0.4, roughness: 0.4 });
-        meshes.motor = new THREE.Mesh(motorGeo, motorMat);
-        const motorXPos = motorDir * (W1 / 2 + 80); // 브라켓 바깥에 위치
-        meshes.motor.position.set(motorXPos, shaftY, 0);
+        const legMat = new THREE.MeshStandardMaterial({ color: 0x374151, metalness: 0.5, roughness: 0.4 });
+
+        // Motor body (원통형)
+        const motorLen = 200; // 모터 길이 (X방향, 샤프트 방향)
+        const motorR = 55; // 모터 반지름
+        const motorBodyGeo = new THREE.CylinderGeometry(motorR, motorR, motorLen, 24);
+        motorBodyGeo.rotateZ(Math.PI / 2);
+        const motorBody = new THREE.Mesh(motorBodyGeo, motorMat);
+        // 브라켓 안쪽면에서 샤프트 방향으로 모터 배치
+        const motorCenterX = motorDir * (W1 / 2 - bkW - motorLen / 2);
+        motorBody.position.set(motorCenterX, 0, 0);
+        meshes.motor.add(motorBody);
+
+        // Motor mounting legs (3개 — 브라켓 위에 안착)
+        const legW = 8, legH = 40, legD = 20;
+        const legGeo = new THREE.BoxGeometry(legW, legH, legD);
+        const legOffsets = [-motorLen * 0.35, 0, motorLen * 0.35]; // 모터 길이 방향 3등분
+        legOffsets.forEach(dx => {
+            const leg = new THREE.Mesh(legGeo, legMat);
+            leg.position.set(motorCenterX + motorDir * dx, -motorR - legH / 2, 0);
+            meshes.motor.add(leg);
+        });
+
+        meshes.motor.position.set(0, shaftY, 0);
         scene.add(meshes.motor);
 
         // === GUIDE RAILS (ExtrudeGeometry) ===