diff --git a/packages/frontend/assets/room/objects/aroma-reed-diffuser/aroma-reed-diffuser.blend b/packages/frontend/assets/room/objects/aroma-reed-diffuser/aroma-reed-diffuser.blend
index e1c6ddbe4d..ac45f88398 100644
Binary files a/packages/frontend/assets/room/objects/aroma-reed-diffuser/aroma-reed-diffuser.blend and b/packages/frontend/assets/room/objects/aroma-reed-diffuser/aroma-reed-diffuser.blend differ
diff --git a/packages/frontend/assets/room/objects/aroma-reed-diffuser/aroma-reed-diffuser.glb b/packages/frontend/assets/room/objects/aroma-reed-diffuser/aroma-reed-diffuser.glb
index 0ccd12a307..4129aa8e08 100644
Binary files a/packages/frontend/assets/room/objects/aroma-reed-diffuser/aroma-reed-diffuser.glb and b/packages/frontend/assets/room/objects/aroma-reed-diffuser/aroma-reed-diffuser.glb differ
diff --git a/packages/frontend/assets/room/objects/cactus-s/cactus-s.blend b/packages/frontend/assets/room/objects/cactus-s/cactus-s.blend
index 2a5735fd46..c0e6f7e9c4 100644
Binary files a/packages/frontend/assets/room/objects/cactus-s/cactus-s.blend and b/packages/frontend/assets/room/objects/cactus-s/cactus-s.blend differ
diff --git a/packages/frontend/assets/room/objects/cactus-s/cactus-s.glb b/packages/frontend/assets/room/objects/cactus-s/cactus-s.glb
index 8e0e1fcd74..1e2d6423d5 100644
Binary files a/packages/frontend/assets/room/objects/cactus-s/cactus-s.glb and b/packages/frontend/assets/room/objects/cactus-s/cactus-s.glb differ
diff --git a/packages/frontend/assets/room/objects/chair/chair.blend b/packages/frontend/assets/room/objects/chair/chair.blend
index 93c9fc5019..e781c8a1de 100644
Binary files a/packages/frontend/assets/room/objects/chair/chair.blend and b/packages/frontend/assets/room/objects/chair/chair.blend differ
diff --git a/packages/frontend/assets/room/objects/chair/chair.glb b/packages/frontend/assets/room/objects/chair/chair.glb
index 0c379a4447..dfccfd79ed 100644
Binary files a/packages/frontend/assets/room/objects/chair/chair.glb and b/packages/frontend/assets/room/objects/chair/chair.glb differ
diff --git a/packages/frontend/src/utility/room/engine.ts b/packages/frontend/src/utility/room/engine.ts
index e2f82d5c3b..c737e1c248 100644
--- a/packages/frontend/src/utility/room/engine.ts
+++ b/packages/frontend/src/utility/room/engine.ts
@@ -243,7 +243,12 @@ class ModelManager {
 
 		const excludeMeshes = [...this.bakeExcludeMeshes, ...this.root.getChildMeshes().filter(m => SYSTEM_MESH_NAMES.some(s => m.name.includes(s)))];
 
-		const childMeshes = this.root.getChildMeshes().filter(m => !excludeMeshes.some(x => x === m) && m.isVisible);
+		const childMeshes = this.root.getChildMeshes().filter(m => !excludeMeshes.some(x => x === m) && m.isVisible && !m.isDisposed());
+
+		if (childMeshes.length <= 1) {
+			this.bakedCallback?.([...childMeshes, ...excludeMeshes]);
+			return;
+		}
 
 		const _toMerge = [] as BABYLON.Mesh[];
 		for (const mesh of childMeshes) {
@@ -301,7 +306,12 @@ class ModelManager {
 			toMerge.push(newMesh);
 		}
 
-		const merged = BABYLON.Mesh.MergeMeshes(toMerge, true, true, undefined, false, true);
+		if (toMerge.length === 0) {
+			this.bakedCallback?.([...childMeshes, ...excludeMeshes]);
+			return;
+		}
+
+		const merged = BABYLON.Mesh.MergeMeshes(toMerge, true, false, undefined, false, true);
 		merged.parent = this.root;
 		merged.material.freeze();
 		if (merged.material instanceof BABYLON.MultiMaterial) {
@@ -333,6 +343,44 @@ class ModelManager {
 	}
 }
 
+function mergeMeshes(meshes: BABYLON.Mesh[], root: BABYLON.Mesh, hasTexture: boolean) {
+	const excludeMeshes = root.getChildMeshes().filter(m => SYSTEM_MESH_NAMES.some(s => m.name.includes(s)));
+
+	const childMeshes = root.getChildMeshes().filter(m => !excludeMeshes.some(x => x === m) && m.isVisible && !m.isDisposed());
+
+	const toMerge = [] as BABYLON.Mesh[];
+	for (const mesh of childMeshes) {
+		if (mesh instanceof BABYLON.InstancedMesh) {
+			continue;
+		}
+
+		if (mesh.hasInstances) continue;
+
+		if (mesh instanceof BABYLON.Mesh) {
+			toMerge.push(mesh);
+		}
+	}
+
+	for (const mesh of toMerge) {
+		if (hasTexture) {
+			if (mesh.getVerticesData(BABYLON.VertexBuffer.UVKind) == null) {
+				const vertexCount = mesh.getTotalVertices();
+				const uvs = new Array(vertexCount * 2).fill(0);
+				mesh.setVerticesData(BABYLON.VertexBuffer.UVKind, uvs, false, 2);
+			}
+			if (mesh.getVerticesData(BABYLON.VertexBuffer.UV2Kind) == null) {
+				const vertexCount = mesh.getTotalVertices();
+				const uvs = new Array(vertexCount * 2).fill(0);
+				mesh.setVerticesData(BABYLON.VertexBuffer.UV2Kind, uvs, false, 2);
+			}
+		}
+	}
+
+	const merged = BABYLON.Mesh.MergeMeshes(toMerge, true, false, undefined, false, true);
+
+	return merged;
+}
+
 export type ObjectDef<OpSc extends OptionsSchema = OptionsSchema> = {
 	id: string;
 	name: string;
@@ -344,6 +392,7 @@ export type ObjectDef<OpSc extends OptionsSchema = OptionsSchema> = {
 	placement: 'top' | 'side' | 'bottom' | 'wall' | 'ceiling' | 'floor';
 	hasCollisions?: boolean;
 	hasTexture?: boolean;
+	canPreMeshesMerging?: boolean;
 	//groupingMeshes: string[]; // multi-materialなメッシュは複数のメッシュに分割されるが、それだと不便な場合に追加の親メッシュでグルーピングするための指定
 	isChair?: boolean;
 	treatLoaderResult?: (loaderResult: BABYLON.AssetContainer) => void;
@@ -833,13 +882,13 @@ export class RoomEngine extends EventEmitter<RoomEngineEvents> {
 
 			// TODO: __PICK__考慮
 			const pickingInfo = this.scene.pick(this.scene.pointerX, this.scene.pointerY,
-				(m) => m.metadata?.objectId != null && this.objectEntities.has(m.metadata.objectId));
+				(m) => m.name.includes('__PICK__') || (m.isVisible && m.isEnabled() && m.metadata?.objectId != null && this.objectEntities.has(m.metadata.objectId)));
 
 			if (pickingInfo.pickedMesh != null) {
 				const oid = pickingInfo.pickedMesh.metadata.objectId;
 				if (oid != null && this.objectEntities.has(oid)) {
 					const o = this.objectEntities.get(oid)!;
-					const boundingInfo = getMeshesBoundingBox(o.rootMesh.getChildMeshes().filter(m => m.isEnabled() && m.isVisible));
+					const boundingInfo = getMeshesBoundingBox(o.rootMesh.getChildMeshes().filter(m => m.isEnabled() && m.isVisible && !m.isDisposed()));
 					this.selectObject(oid);
 
 					{ // camera animation
@@ -1169,6 +1218,19 @@ export class RoomEngine extends EventEmitter<RoomEngineEvents> {
 			}
 		}
 
+		if (def.canPreMeshesMerging) {
+			const merged = mergeMeshes(loaderResult.meshes, subRoot, def.hasTexture);
+			merged.setParent(subRoot);
+			merged.name = 'preMerged';
+
+			// TODO: 再帰的にする
+			for (const m of loaderResult.transformNodes) {
+				if (m.getChildren().length === 0) {
+					m.dispose();
+				}
+			}
+		}
+
 		if (BAKE_TRANSFORM) {
 			subRoot.scaling = new BABYLON.Vector3(1, 1, 1);
 			subRoot.rotationQuaternion = null;
@@ -1330,7 +1392,7 @@ export class RoomEngine extends EventEmitter<RoomEngineEvents> {
 		root.rotation = args.rotation.clone();
 		root.metadata = metadata;
 
-		const model = new ModelManager(BAKE_TRANSFORM ? root : subRoot, loaderResult.meshes.filter(m => m.name !== '__root__'), def.hasTexture, (meshes) => {
+		const model = new ModelManager(BAKE_TRANSFORM ? root : subRoot, loaderResult.meshes.filter(m => !m.isDisposed() && m.name !== '__root__'), def.hasTexture, (meshes) => {
 			if (this.selected?.objectId === args.id) {
 				this.highlightMeshes(meshes);
 			}
@@ -2082,6 +2144,20 @@ export class RoomObjectPreviewEngine {
 		const filePath = def.path != null ? `/client-assets/room/objects/${def.path}.glb` : `/client-assets/room/objects/${camelToKebab(args.type)}/${camelToKebab(args.type)}.glb`;
 		const loaderResult = await BABYLON.LoadAssetContainerAsync(filePath, this.scene);
 
+		// 不要なUVを掃除
+		if (!def.hasTexture) {
+			for (const m of loaderResult.meshes) {
+				if (m.geometry != null) {
+					m.geometry.removeVerticesData(BABYLON.VertexBuffer.UVKind);
+					m.geometry.removeVerticesData(BABYLON.VertexBuffer.UV2Kind);
+					m.geometry.removeVerticesData(BABYLON.VertexBuffer.UV3Kind);
+					m.geometry.removeVerticesData(BABYLON.VertexBuffer.UV4Kind);
+					m.geometry.removeVerticesData(BABYLON.VertexBuffer.UV5Kind);
+					m.geometry.removeVerticesData(BABYLON.VertexBuffer.UV6Kind);
+				}
+			}
+		}
+
 		// babylonによって自動で追加される右手系変換用ノード
 		const subRoot = loaderResult.meshes[0];
 		subRoot.scaling = subRoot.scaling.scale(WORLD_SCALE);// cmをmに
@@ -2090,7 +2166,7 @@ export class RoomObjectPreviewEngine {
 
 		root.addChild(subRoot);
 
-		const model = new ModelManager(subRoot, loaderResult.meshes.filter(m => m !== subRoot), def.hasTexture, (meshes) => {
+		const model = new ModelManager(subRoot, loaderResult.meshes.filter(m => !m.isDisposed() && m !== subRoot), def.hasTexture, (meshes) => {
 			for (const m of meshes) {
 				const mesh = m;
 
diff --git a/packages/frontend/src/utility/room/objects/aircon.ts b/packages/frontend/src/utility/room/objects/aircon.ts
index 547a72da0e..12044454a7 100644
--- a/packages/frontend/src/utility/room/objects/aircon.ts
+++ b/packages/frontend/src/utility/room/objects/aircon.ts
@@ -14,6 +14,7 @@ export const aircon = defineObject({
 	},
 	placement: 'wall',
 	hasCollisions: false,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/aromaReedDiffuser.ts b/packages/frontend/src/utility/room/objects/aromaReedDiffuser.ts
index c297d5d7c7..fa1f941b4c 100644
--- a/packages/frontend/src/utility/room/objects/aromaReedDiffuser.ts
+++ b/packages/frontend/src/utility/room/objects/aromaReedDiffuser.ts
@@ -28,12 +28,10 @@ export const aromaReedDiffuser = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: ({ options, model }) => {
-		const bottleMesh = model.findMesh('__X_BOTTLE__');
-		const bottleMaterial = bottleMesh.material as BABYLON.PBRMaterial;
-
-		const oilMesh = model.findMesh('__X_OIL__');
-		const oilMaterial = oilMesh.material as BABYLON.PBRMaterial;
+		const bottleMaterial = model.findMaterial('__X_BOTTLE__');
+		const oilMaterial = model.findMaterial('__X_OIL__');
 
 		const applyBottleColor = () => {
 			const [r, g, b] = options.bottleColor;
diff --git a/packages/frontend/src/utility/room/objects/banknote.ts b/packages/frontend/src/utility/room/objects/banknote.ts
index 23f8cd728d..75cc5d5c44 100644
--- a/packages/frontend/src/utility/room/objects/banknote.ts
+++ b/packages/frontend/src/utility/room/objects/banknote.ts
@@ -15,6 +15,7 @@ export const banknote = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/beamLamp.ts b/packages/frontend/src/utility/room/objects/beamLamp.ts
index 1011532da3..85b29fd6b1 100644
--- a/packages/frontend/src/utility/room/objects/beamLamp.ts
+++ b/packages/frontend/src/utility/room/objects/beamLamp.ts
@@ -16,6 +16,7 @@ export const beamLamp = defineObject({
 	},
 	placement: 'top',
 	hasCollisions: false,
+	canPreMeshesMerging: true,
 	createInstance: ({ room, root, scene }) => {
 		return {
 			onInited: () => {
diff --git a/packages/frontend/src/utility/room/objects/cactusS.ts b/packages/frontend/src/utility/room/objects/cactusS.ts
index f79f5bd314..e16bb4fdb1 100644
--- a/packages/frontend/src/utility/room/objects/cactusS.ts
+++ b/packages/frontend/src/utility/room/objects/cactusS.ts
@@ -23,9 +23,9 @@ export const cactusS = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: ({ options, model }) => {
-		const potMesh = model.findMesh('__X_POT__');
-		const potMaterial = potMesh.material as BABYLON.PBRMaterial;
+		const potMaterial = model.findMaterial('__X_POT__');
 
 		const applyPotColor = () => {
 			const [r, g, b] = options.potColor;
diff --git a/packages/frontend/src/utility/room/objects/chair.ts b/packages/frontend/src/utility/room/objects/chair.ts
index e8a43c0ae3..1ade6539b7 100644
--- a/packages/frontend/src/utility/room/objects/chair.ts
+++ b/packages/frontend/src/utility/room/objects/chair.ts
@@ -28,12 +28,10 @@ export const chair = defineObject({
 	placement: 'floor',
 	hasCollisions: true,
 	isChair: true,
+	canPreMeshesMerging: true,
 	createInstance: ({ model, options }) => {
-		const primaryMesh = model.findMesh('__X_PRIMARY__');
-		const primaryMaterial = primaryMesh.material as BABYLON.PBRMaterial;
-
-		const secondaryMesh = model.findMesh('__X_SECONDARY__');
-		const secondaryMaterial = secondaryMesh.material as BABYLON.PBRMaterial;
+		const primaryMaterial = model.findMaterial('__X_PRIMARY__');
+		const secondaryMaterial = model.findMaterial('__X_SECONDARY__');
 
 		const applyPrimaryColor = () => {
 			const [r, g, b] = options.primaryColor;
diff --git a/packages/frontend/src/utility/room/objects/coffeeCup.ts b/packages/frontend/src/utility/room/objects/coffeeCup.ts
index 7b6e4e2c91..a38cd8d1a7 100644
--- a/packages/frontend/src/utility/room/objects/coffeeCup.ts
+++ b/packages/frontend/src/utility/room/objects/coffeeCup.ts
@@ -15,6 +15,7 @@ export const coffeeCup = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/cupNoodle.ts b/packages/frontend/src/utility/room/objects/cupNoodle.ts
index 13333d919e..a3cb80486d 100644
--- a/packages/frontend/src/utility/room/objects/cupNoodle.ts
+++ b/packages/frontend/src/utility/room/objects/cupNoodle.ts
@@ -17,6 +17,7 @@ export const cupNoodle = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: ({ scene, root }) => {
 		let yugeDispose: (() => void) | null = null;
 
diff --git a/packages/frontend/src/utility/room/objects/custardPudding.ts b/packages/frontend/src/utility/room/objects/custardPudding.ts
index 743a5449bf..dfd007fcf5 100644
--- a/packages/frontend/src/utility/room/objects/custardPudding.ts
+++ b/packages/frontend/src/utility/room/objects/custardPudding.ts
@@ -14,6 +14,7 @@ export const custardPudding = defineObject({
 	},
 	placement: 'top',
 	hasCollisions: false,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/desktopPc.ts b/packages/frontend/src/utility/room/objects/desktopPc.ts
index 320b96d359..5cb59ed075 100644
--- a/packages/frontend/src/utility/room/objects/desktopPc.ts
+++ b/packages/frontend/src/utility/room/objects/desktopPc.ts
@@ -48,6 +48,7 @@ export const desktopPc = defineObject({
 	},
 	placement: 'top',
 	hasCollisions: true,
+	canPreMeshesMerging: true,
 	createInstance: ({ options, model, root, scene, room }) => {
 		const light1 = new BABYLON.SpotLight('', new BABYLON.Vector3(0, cm(10), cm(22)), new BABYLON.Vector3(0, 0, 1), Math.PI / 1, 2, scene, room?.lightContainer != null);
 		light1.parent = root;
diff --git a/packages/frontend/src/utility/room/objects/djMixer.ts b/packages/frontend/src/utility/room/objects/djMixer.ts
index 679844c6ea..51ec3734aa 100644
--- a/packages/frontend/src/utility/room/objects/djMixer.ts
+++ b/packages/frontend/src/utility/room/objects/djMixer.ts
@@ -15,6 +15,7 @@ export const djMixer = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/facialTissue.ts b/packages/frontend/src/utility/room/objects/facialTissue.ts
index c2ee98371b..5285bb828c 100644
--- a/packages/frontend/src/utility/room/objects/facialTissue.ts
+++ b/packages/frontend/src/utility/room/objects/facialTissue.ts
@@ -15,6 +15,7 @@ export const facialTissue = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/hangingTShirt.ts b/packages/frontend/src/utility/room/objects/hangingTShirt.ts
index be1a578921..822afcc081 100644
--- a/packages/frontend/src/utility/room/objects/hangingTShirt.ts
+++ b/packages/frontend/src/utility/room/objects/hangingTShirt.ts
@@ -15,6 +15,7 @@ export const hangingTShirt = defineObject({
 	placement: 'side',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/keyboard.ts b/packages/frontend/src/utility/room/objects/keyboard.ts
index 8e5095b4ab..cbd860a884 100644
--- a/packages/frontend/src/utility/room/objects/keyboard.ts
+++ b/packages/frontend/src/utility/room/objects/keyboard.ts
@@ -14,6 +14,7 @@ export const keyboard = defineObject({
 	},
 	placement: 'top',
 	hasCollisions: false,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/letterCase.ts b/packages/frontend/src/utility/room/objects/letterCase.ts
index 290e75af70..3d3a6eab71 100644
--- a/packages/frontend/src/utility/room/objects/letterCase.ts
+++ b/packages/frontend/src/utility/room/objects/letterCase.ts
@@ -13,6 +13,7 @@ export const letterCase = defineObject({
 		default: {},
 	},
 	placement: 'top',
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/miPlate.ts b/packages/frontend/src/utility/room/objects/miPlate.ts
index 5dc451bbe8..d2c10053fb 100644
--- a/packages/frontend/src/utility/room/objects/miPlate.ts
+++ b/packages/frontend/src/utility/room/objects/miPlate.ts
@@ -14,6 +14,7 @@ export const miPlate = defineObject({
 	},
 	placement: 'top',
 	hasCollisions: false,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/miPlateDisplayed.ts b/packages/frontend/src/utility/room/objects/miPlateDisplayed.ts
index 63329511ee..d1bdfc926a 100644
--- a/packages/frontend/src/utility/room/objects/miPlateDisplayed.ts
+++ b/packages/frontend/src/utility/room/objects/miPlateDisplayed.ts
@@ -14,6 +14,7 @@ export const miPlateDisplayed = defineObject({
 	},
 	placement: 'top',
 	hasCollisions: false,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/pachira.ts b/packages/frontend/src/utility/room/objects/pachira.ts
index ebf3f3d03f..4f5f191b05 100644
--- a/packages/frontend/src/utility/room/objects/pachira.ts
+++ b/packages/frontend/src/utility/room/objects/pachira.ts
@@ -15,6 +15,7 @@ export const pachira = defineObject({
 	placement: 'top',
 	hasCollisions: true,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/piano.ts b/packages/frontend/src/utility/room/objects/piano.ts
index 992650f0f4..da3875c04f 100644
--- a/packages/frontend/src/utility/room/objects/piano.ts
+++ b/packages/frontend/src/utility/room/objects/piano.ts
@@ -22,6 +22,7 @@ export const piano = defineObject({
 	},
 	placement: 'floor',
 	hasCollisions: true,
+	canPreMeshesMerging: true,
 	createInstance: ({ options, model }) => {
 		const bodyMaterial = model.findMaterial('__X_BODY__');
 
diff --git a/packages/frontend/src/utility/room/objects/pizza.ts b/packages/frontend/src/utility/room/objects/pizza.ts
index 22827503f0..2e93d58f89 100644
--- a/packages/frontend/src/utility/room/objects/pizza.ts
+++ b/packages/frontend/src/utility/room/objects/pizza.ts
@@ -14,6 +14,7 @@ export const pizza = defineObject({
 	},
 	placement: 'top',
 	hasCollisions: false,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/plant.ts b/packages/frontend/src/utility/room/objects/plant.ts
index 2c50158d9c..ba064e07fc 100644
--- a/packages/frontend/src/utility/room/objects/plant.ts
+++ b/packages/frontend/src/utility/room/objects/plant.ts
@@ -15,6 +15,7 @@ export const plant = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/objects/tabletopCalendar.ts b/packages/frontend/src/utility/room/objects/tabletopCalendar.ts
index d2a01e6199..a3ee36f77c 100644
--- a/packages/frontend/src/utility/room/objects/tabletopCalendar.ts
+++ b/packages/frontend/src/utility/room/objects/tabletopCalendar.ts
@@ -15,6 +15,7 @@ export const tabletopCalendar = defineObject({
 	placement: 'top',
 	hasCollisions: false,
 	hasTexture: true,
+	canPreMeshesMerging: true,
 	createInstance: () => {
 		return {
 			interactions: {},
diff --git a/packages/frontend/src/utility/room/utility.ts b/packages/frontend/src/utility/room/utility.ts
index 2cce48f6e6..475178121c 100644
--- a/packages/frontend/src/utility/room/utility.ts
+++ b/packages/frontend/src/utility/room/utility.ts
@@ -417,18 +417,26 @@ export function createPlaneUvMapper(mesh: BABYLON.Mesh) {
 	};
 }
 
-export function findMaterial(rootMesh: BABYLON.AbstractMesh, keyword: string): BABYLON.PBRMaterial {
+export function findMaterial(rootMesh: BABYLON.AbstractMesh, keyword: string, allowMultiMaterial = false): BABYLON.PBRMaterial {
 	for (const m of rootMesh.getChildMeshes()) {
 		if (m.material == null) continue;
-		if (m.material.name.includes(keyword)) {
-			return m.material as BABYLON.PBRMaterial;
-		} else if ((m.material as BABYLON.MultiMaterial).subMaterials != null) {
+		if (m.material instanceof BABYLON.MultiMaterial) {
+			if (allowMultiMaterial && m.material.name.includes(keyword)) {
+				return m.material as BABYLON.MultiMaterial;
+			}
+
+			if ((m.material as BABYLON.MultiMaterial).subMaterials == null) continue;
+
 			for (const sm of (m.material as BABYLON.MultiMaterial).subMaterials) {
 				if (sm == null) continue;
 				if (sm.name.includes(keyword)) {
 					return sm as BABYLON.PBRMaterial;
 				}
 			}
+		} else {
+			if (m.material.name.includes(keyword)) {
+				return m.material as BABYLON.PBRMaterial;
+			}
 		}
 	}
 	throw new Error(`Material with keyword "${keyword}" not found`);