diff --git a/Core/src/ots_materials.ts b/Core/src/ots_materials.ts
index 230411b..399481e 100644
--- a/Core/src/ots_materials.ts
+++ b/Core/src/ots_materials.ts
@@ -1,4 +1,4 @@
-import { RGBA } from "./colour";
+import { RGBA, RGBAUtil } from "./colour";
 //import { Material, OtS_Util } from "./materials";
 import { OtS_Texture } from "./ots_texture";
 
@@ -7,6 +7,41 @@ export type OtS_MeshSection = { name: string, positionData: Float32Array, normal
     | { type: 'colour', colourData: Float32Array }
     | { type: 'textured', texcoordData: Float32Array, texture: OtS_Texture });
 
+export namespace OtS_MeshUtil {
+    export function copySection(section: OtS_MeshSection): OtS_MeshSection {
+        switch(section.type) {
+            case 'solid':
+                return {
+                    type: 'solid',
+                    name: section.name,
+                    indexData: section.indexData.slice(0),
+                    positionData: section.positionData.slice(0),
+                    normalData: section.normalData.slice(0),
+                    colour: RGBAUtil.copy(section.colour),
+                };
+            case 'colour':
+                return {
+                    type: 'colour',
+                    name: section.name,
+                    indexData: section.indexData.slice(0),
+                    positionData: section.positionData.slice(0),
+                    normalData: section.normalData.slice(0),
+                    colourData: section.colourData.slice(0),
+                };
+            case 'textured':
+                return {
+                    type: 'textured',
+                    name: section.name,
+                    indexData: section.indexData.slice(0),
+                    positionData: section.positionData.slice(0),
+                    normalData: section.normalData.slice(0),
+                    texcoordData: section.texcoordData.slice(0),
+                    texture: section.texture.copy(),
+                };
+        }
+    }
+}
+
 /*
 export class OtS_MaterialSlots {
     private _slots: Map<number, Material>;
diff --git a/Core/src/ots_mesh.ts b/Core/src/ots_mesh.ts
index ca701f8..7f2b485 100644
--- a/Core/src/ots_mesh.ts
+++ b/Core/src/ots_mesh.ts
@@ -1,7 +1,7 @@
 import { Bounds } from './bounds';
 import { RGBA } from './colour';
 import { degreesToRadians } from './math';
-import { OtS_MeshSection } from './ots_materials';
+import { OtS_MeshSection, OtS_MeshUtil } from './ots_materials';
 import { OtS_Texture } from './ots_texture';
 import { UV } from "./util";
 import { ASSERT } from './util/error_util';
@@ -357,10 +357,10 @@ export class OtS_Mesh {
     public copy() {
         const clone = OtS_Mesh.create();
 
-        for (const section of this._sections) {
+        this.getSectionData().forEach((section) => {
             const success = clone.addSection(section).ok;
             ASSERT(success);
-        }
+        })
 
         return clone;
     }
@@ -391,9 +391,10 @@ export class OtS_Mesh {
             .reduce((total, count) => total + count, 0);
     }
 
-    // TODO: Return copy
     public getSectionData(): OtS_MeshSection[] {
-        return this._sections;
+        return this._sections.map((section) => {
+            return OtS_MeshUtil.copySection(section);
+        })
     }
 
     public getSectionMetadata(): OtS_MeshSectionMetadata[] {