diff --git a/optuna_dashboard/ts/components/ModelViewer.tsx b/optuna_dashboard/ts/components/ModelViewer.tsx
index 9695f139..5f0d00bc 100644
--- a/optuna_dashboard/ts/components/ModelViewer.tsx
+++ b/optuna_dashboard/ts/components/ModelViewer.tsx
@@ -3,6 +3,7 @@ import React, { useState } from "react"
 import { Canvas } from "@react-three/fiber"
 import { GizmoHelper, GizmoViewport, OrbitControls } from "@react-three/drei"
 import { STLLoader } from "three/examples/jsm/loaders/STLLoader"
+import { Rhino3dmLoader } from "three/examples/jsm/loaders/3DMLoader"
 import { PerspectiveCamera } from "three"
 
 interface ModelViewerProps {
@@ -10,6 +11,7 @@ interface ModelViewerProps {
   width: string
   height: string
   hasGizmo: boolean
+  filetype: string | undefined
 }
 
 function CustomGizmoHelper(): JSX.Element {
@@ -24,23 +26,46 @@ function CustomGizmoHelper(): JSX.Element {
 }
 
 export function ModelViewer(props: ModelViewerProps): JSX.Element {
-  const [geometry, setGeometry] = useState<THREE.BufferGeometry>()
+  const [geometry, setGeometry] = useState<THREE.BufferGeometry[]>([])
   const [modelSize, setModelSize] = useState<THREE.Vector3>()
 
   React.useEffect(() => {
-    const loader = new STLLoader()
-    loader.load(props.src, (geometry: THREE.BufferGeometry) => {
-      if (geometry) {
-        setGeometry(geometry)
-        geometry.computeBoundingBox()
-        if (geometry.boundingBox === null) {
-          setModelSize(new THREE.Vector3(10, 10, 10))
-        } else {
-          const size = geometry.boundingBox.getSize(new THREE.Vector3())
-          setModelSize(size)
+    if ("stl" === props.filetype) {
+      const stlLoader = new STLLoader()
+      stlLoader.load(props.src, (stlMesh: THREE.BufferGeometry) => {
+        if (stlMesh) {
+          setGeometry([stlMesh])
+          stlMesh.computeBoundingBox()
+          if (stlMesh.boundingBox === null) {
+            setModelSize(new THREE.Vector3(10, 10, 10))
+          } else {
+            const size = stlMesh.boundingBox.getSize(new THREE.Vector3())
+            setModelSize(size)
+          }
         }
-      }
-    })
+      })
+    } else if ("3dm" === props.filetype) {
+      const loader = new Rhino3dmLoader()
+      loader.setLibraryPath("https://cdn.jsdelivr.net/npm/rhino3dm@7.15.0/")
+      loader.load(props.src, (object: THREE.Object3D) => {
+        object.traverse(function (child) {
+          // rotate to y-up
+          child.rotateX(-Math.PI / 4)
+        })
+        const meshes = object.children as THREE.Mesh[]
+        const rhinoMeshes = meshes.map((mesh) => mesh.geometry)
+        if (rhinoMeshes.length > 0) {
+          setGeometry(rhinoMeshes)
+          rhinoMeshes[0].computeBoundingBox()
+          if (rhinoMeshes[0].boundingBox === null) {
+            setModelSize(new THREE.Vector3(10, 10, 10))
+          } else {
+            const size = rhinoMeshes[0].boundingBox.getSize(new THREE.Vector3())
+            setModelSize(size)
+          }
+        }
+      })
+    }
   }, [])
   const cameraPosition = modelSize
     ? [modelSize.x * 1.5, modelSize.y * 1.5, modelSize.z * 1.5]
@@ -51,8 +76,8 @@ export function ModelViewer(props: ModelViewerProps): JSX.Element {
       : 45,
     aspect: window.innerWidth / window.innerHeight,
     near: 0.1,
+    position: new THREE.Vector3(...cameraPosition),
     far: 1000,
-    position: cameraPosition,
   }
 
   return (
@@ -67,11 +92,12 @@ export function ModelViewer(props: ModelViewerProps): JSX.Element {
       />
       {props.hasGizmo && <CustomGizmoHelper />}
       <axesHelper />
-      {geometry && (
-        <mesh geometry={geometry}>
-          <meshNormalMaterial />
-        </mesh>
-      )}
+      {geometry.length > 0 &&
+        geometry.map((geo, index) => (
+          <mesh key={index} geometry={geo}>
+            <meshNormalMaterial />
+          </mesh>
+        ))}
     </Canvas>
   )
 }
diff --git a/optuna_dashboard/ts/components/TrialList.tsx b/optuna_dashboard/ts/components/TrialList.tsx
index 744db8d4..05a7bb2a 100644
--- a/optuna_dashboard/ts/components/TrialList.tsx
+++ b/optuna_dashboard/ts/components/TrialList.tsx
@@ -330,7 +330,9 @@ const TrialArtifact: FC<{ trial: Trial }> = ({ trial }) => {
   const [openDeleteArtifactDialog, renderDeleteArtifactDialog] =
     useDeleteArtifactDialog()
   const [dragOver, setDragOver] = useState<boolean>(false)
-  const [open3dModelViewer, setOpen3dModelViewer] = useState<boolean>(false)
+  const [open3dModelViewer, setOpen3dModelViewer] = useState<{
+    [key: string]: boolean
+  }>({})
 
   const width = "200px"
   const height = "150px"
@@ -442,7 +444,10 @@ const TrialArtifact: FC<{ trial: Trial }> = ({ trial }) => {
                 </CardContent>
               </Card>
             )
-          } else if (a.filename.endsWith(".stl")) {
+          } else if (
+            a.filename.endsWith(".stl") ||
+            a.filename.endsWith(".3dm")
+          ) {
             return (
               <Card
                 key={a.artifact_id}
@@ -468,6 +473,7 @@ const TrialArtifact: FC<{ trial: Trial }> = ({ trial }) => {
                     width={width}
                     height={height}
                     hasGizmo={false}
+                    filetype={a.filename.split(".").pop()}
                   />
                 </Box>
                 <CardContent
@@ -488,20 +494,32 @@ const TrialArtifact: FC<{ trial: Trial }> = ({ trial }) => {
                     {a.filename}
                   </Typography>
                   <IconButton
-                    aria-label="shoe artifact 3d model"
+                    aria-label="show artifact 3d model"
                     size="small"
                     color="inherit"
                     sx={{ margin: "auto 0" }}
                     onClick={() => {
-                      setOpen3dModelViewer(true)
+                      setOpen3dModelViewer(() => {
+                        const obj = { ...open3dModelViewer }
+                        obj[a.filename] = true
+                        return obj
+                      })
                     }}
                   >
                     <OpenWithIcon />
                   </IconButton>
                   <Modal
-                    open={open3dModelViewer}
+                    open={
+                      a.filename in open3dModelViewer
+                        ? open3dModelViewer[a.filename]
+                        : false
+                    }
                     onClose={() => {
-                      setOpen3dModelViewer(false)
+                      setOpen3dModelViewer(() => {
+                        const obj = { ...open3dModelViewer }
+                        obj[a.filename] = false
+                        return obj
+                      })
                     }}
                   >
                     <Box
@@ -519,6 +537,7 @@ const TrialArtifact: FC<{ trial: Trial }> = ({ trial }) => {
                         width={`${innerWidth * 0.8}px`}
                         height={`${innerHeight * 0.8}px`}
                         hasGizmo={true}
+                        filetype={a.filename.split(".").pop()}
                       />
                     </Box>
                   </Modal>