diff --git a/src/editor/renderer/renderer.ts b/src/editor/renderer/renderer.ts
index 0fa6e11..059f5d9 100644
--- a/src/editor/renderer/renderer.ts
+++ b/src/editor/renderer/renderer.ts
@@ -16,7 +16,7 @@ import { RenderMeshParams, RenderNextBlockMeshChunkParams, RenderNextVoxelMeshCh
 import { UIUtil } from '../../runtime/util/ui_util';
 import { TAxis } from '../../runtime/util/type_util';
 import { Atlas } from '../../runtime/atlas';
-import { Material, MaterialType } from '../../runtime/materials';
+import { Material } from '../../runtime/materials';
 
 /* eslint-disable */
 export enum MeshType {
@@ -41,7 +41,7 @@ enum EDebugBufferComponents {
  * Dedicated type for passing to shaders for solid materials
  */
 type InternalSolidMaterial = {
-    type: MaterialType.solid,
+    type: 'solid',
     colourArray: number[],
 }
 
@@ -49,7 +49,7 @@ type InternalSolidMaterial = {
  * Dedicated type for passing to shaders for textured materials
  */
 type InternalTextureMaterial = {
-    type: MaterialType.textured,
+    type: 'textured',
     diffuseTexture: WebGLTexture,
     // The texture to sample alpha values from (if is using a texture map)
     alphaTexture: WebGLTexture,
@@ -328,9 +328,9 @@ export class Renderer {
     }
 
     private _createInternalMaterial(material: Material): (InternalSolidMaterial | InternalTextureMaterial) {
-        if (material.type === MaterialType.solid) {
+        if (material.type === 'solid') {
             return {
-                type: MaterialType.solid,
+                type: 'solid',
                 colourArray: RGBAUtil.toArray(material.colour),
             };
         } else {
@@ -389,7 +389,7 @@ export class Renderer {
             }
 
             return {
-                type: MaterialType.textured,
+                type: 'textured',
                 diffuseTexture: diffuseTexture,
                 alphaTexture: alphaTexture,
                 alphaValue: alphaValue,
@@ -565,7 +565,7 @@ export class Renderer {
 
     private _drawMesh() {
         this._materialBuffers.forEach((materialBuffer, materialName) => {
-            if (materialBuffer.material.type === MaterialType.textured) {
+            if (materialBuffer.material.type === 'textured') {
                 this._drawMeshBuffer(materialBuffer.buffer, materialBuffer.numElements, ShaderManager.Get.textureTriProgram!, {
                     u_lightWorldPos: ArcballCamera.Get.getCameraPosition(-Math.PI/4, 0.0).toArray(),
                     u_worldViewProjection: ArcballCamera.Get.getWorldViewProjection(),
diff --git a/src/editor/ui/components/material_type.ts b/src/editor/ui/components/material_type.ts
index 0487920..941f3c1 100644
--- a/src/editor/ui/components/material_type.ts
+++ b/src/editor/ui/components/material_type.ts
@@ -2,9 +2,9 @@ import { LOC } from '../../localiser';
 import { AppIcons } from '../../../editor/ui/icons';
 import { ConfigComponent } from './config';
 import { ToolbarItemComponent } from './toolbar_item';
-import { Material, MaterialType } from '../../../runtime/materials';
+import { Material, OtS_MaterialType } from '../../../runtime/materials';
 
-export class MaterialTypeComponent extends ConfigComponent<MaterialType, HTMLDivElement> {
+export class MaterialTypeComponent extends ConfigComponent<OtS_MaterialType, HTMLDivElement> {
     private _solidButton: ToolbarItemComponent;
     private _texturedButton: ToolbarItemComponent;
     private _material: Material;
@@ -17,7 +17,7 @@ export class MaterialTypeComponent extends ConfigComponent<MaterialType, HTMLDiv
             .setLabel(LOC('materials.components.solid'))
             .setGrow()
             .onClick(() => {
-                if (this._material.type === MaterialType.textured) {
+                if (this._material.type === 'textured') {
                     this._onClickChangeTypeDelegate?.();
                 }
             });
@@ -26,7 +26,7 @@ export class MaterialTypeComponent extends ConfigComponent<MaterialType, HTMLDiv
             .setLabel(LOC('materials.components.textured'))
             .setGrow()
             .onClick(() => {
-                if (this._material.type === MaterialType.solid) {
+                if (this._material.type === 'solid') {
                     this._onClickChangeTypeDelegate?.();
                 }
             });
@@ -45,8 +45,8 @@ export class MaterialTypeComponent extends ConfigComponent<MaterialType, HTMLDiv
         this._solidButton.finalise();
         this._texturedButton.finalise();
 
-        this._solidButton.setActive(this._material.type === MaterialType.solid);
-        this._texturedButton.setActive(this._material.type === MaterialType.textured);
+        this._solidButton.setActive(this._material.type === 'solid');
+        this._texturedButton.setActive(this._material.type === 'textured');
     }
 
     public override registerEvents(): void {
@@ -58,7 +58,7 @@ export class MaterialTypeComponent extends ConfigComponent<MaterialType, HTMLDiv
         super._onEnabledChanged();
 
         this._solidButton.setEnabled(this.enabled);
-        this._texturedButton.setEnabled(this.enabled && (this._material.type === MaterialType.textured || this._material.canBeTextured));
+        this._texturedButton.setEnabled(this.enabled && (this._material.type === 'textured' || this._material.canBeTextured));
     }
 
     protected override _onValueChanged(): void {
diff --git a/src/editor/ui/layout.ts b/src/editor/ui/layout.ts
index 21d77fb..1de3a43 100644
--- a/src/editor/ui/layout.ts
+++ b/src/editor/ui/layout.ts
@@ -7,7 +7,7 @@ import { ArcballCamera } from '../renderer/camera';
 import { EAppEvent, EventManager } from '../event';
 import { TExporters } from '../../runtime/exporters/exporters';
 import { LOC, Localiser, TLocalisedString } from '../localiser';
-import { MaterialMapManager, MaterialType } from '../../runtime/materials';
+import { MaterialMapManager } from '../../runtime/materials';
 import { MeshType, Renderer } from '../renderer/renderer';
 import { EAction } from '../../runtime/util';
 import { ASSERT } from '../../runtime/util/error_util';
@@ -872,18 +872,18 @@ export class UI {
             this.layoutDull['materials'].componentOrder.push(`placeholder_element`);
         } else {
             materialManager.toMaterialArray().forEach((material) => {
-                if (material.type === MaterialType.solid) {
+                if (material.type === 'solid') {
                     this.layoutDull['materials'].components[`mat_${material.name}`] = new SolidMaterialComponent(material.name, material)
                         .setUnlocalisedLabel(material.name)
                         .onChangeTypeDelegate(() => {
-                            materialManager.changeMaterialType(material.name, MaterialType.textured);
+                            materialManager.changeMaterialType(material.name, 'textured');
                             this.updateMaterialsAction(materialManager);
                         });
                 } else {
                     this.layoutDull['materials'].components[`mat_${material.name}`] = new TexturedMaterialComponent(material.name, material)
                         .setUnlocalisedLabel(material.name)
                         .onChangeTypeDelegate(() => {
-                            materialManager.changeMaterialType(material.name, MaterialType.solid);
+                            materialManager.changeMaterialType(material.name, 'solid');
                             this.updateMaterialsAction(materialManager);
                         })
                         .onChangeTransparencyTypeDelegate((newTransparency) => {
diff --git a/src/runtime/importers/gltf_loader.ts b/src/runtime/importers/gltf_loader.ts
index 82b85e0..6e7178c 100644
--- a/src/runtime/importers/gltf_loader.ts
+++ b/src/runtime/importers/gltf_loader.ts
@@ -6,7 +6,7 @@ import { UV } from '../util';
 import { Vector3 } from '../vector';
 import { IImporter } from './base_importer';
 import { OtS_Mesh, TEMP_CONVERT_MESH, Tri } from '../ots_mesh';
-import { Material, MaterialType } from '../materials';
+import { Material } from '../materials';
 
 export type TGltfImporterError =
     | { type: 'failed-to-parse' }
@@ -44,9 +44,8 @@ export class GltfLoader extends IImporter {
         const meshMaterials: Map<string, Material> = new Map();
         meshMaterials.set('NONE', {
             name: 'NONE',
-            type: MaterialType.solid,
+            type: 'solid',
             colour: RGBAUtil.copy(RGBAColours.WHITE),
-            needsAttention: false,
             canBeTextured: false,
         });
         let maxIndex = 0;
@@ -111,22 +110,20 @@ export class GltfLoader extends IImporter {
 
                                     meshMaterials.set(materialName, {
                                         name: materialName,
-                                        type: MaterialType.textured,
+                                        type: 'textured',
                                         diffuse: {
                                             filetype: mimeType === 'image/jpeg' ? 'jpg' : 'png',
                                             raw: (mimeType === 'image/jpeg' ? 'data:image/jpeg;base64,' : 'data:image/png;base64,') + base64,
                                         },
                                         extension: 'clamp',
                                         interpolation: 'linear',
-                                        needsAttention: false,
                                         transparency: { type: 'None' },
                                     });
                                 } catch {
                                     meshMaterials.set(materialName, {
                                         name: materialName,
-                                        type: MaterialType.solid,
+                                        type: 'solid',
                                         colour: RGBAUtil.copy(RGBAColours.WHITE),
-                                        needsAttention: false,
                                         canBeTextured: true,
                                     });
                                 }
@@ -144,14 +141,13 @@ export class GltfLoader extends IImporter {
                                 if (diffuseColour !== undefined) {
                                     meshMaterials.set(materialName, {
                                         name: materialName,
-                                        type: MaterialType.solid,
+                                        type: 'solid',
                                         colour: {
                                             r: diffuseColour[0],
                                             g: diffuseColour[1],
                                             b: diffuseColour[2],
                                             a: diffuseColour[3],
                                         },
-                                        needsAttention: false,
                                         canBeTextured: false,
                                     });
                                 }
@@ -165,14 +161,13 @@ export class GltfLoader extends IImporter {
                         if (!materialMade && emissiveColour !== undefined) {
                             meshMaterials.set(materialName, {
                                 name: materialName,
-                                type: MaterialType.solid,
+                                type: 'solid',
                                 colour: {
                                     r: emissiveColour[0],
                                     g: emissiveColour[1],
                                     b: emissiveColour[2],
                                     a: 1.0,
                                 },
-                                needsAttention: false,
                                 canBeTextured: false,
                             });
 
diff --git a/src/runtime/materials.ts b/src/runtime/materials.ts
index 2ae1ebf..d4a3792 100644
--- a/src/runtime/materials.ts
+++ b/src/runtime/materials.ts
@@ -3,20 +3,19 @@ import { EImageChannel, TImageRawWrap, TTransparencyOptions, TTransparencyTypes
 import { ASSERT } from './util/error_util';
 import { TTexelExtension, TTexelInterpolation } from './util/type_util';
 
-export enum MaterialType { solid, textured }
+export type OtS_MaterialType = 'solid' | 'textured';
 
 type BaseMaterial = {
     name: string,
-    needsAttention: boolean, // True if the user should make edits to this material
 }
 
 export type SolidMaterial = BaseMaterial & {
-    type: MaterialType.solid,
+    type: 'solid'
     colour: RGBA,
     canBeTextured: boolean,
 }
 export type TexturedMaterial = BaseMaterial & {
-    type: MaterialType.textured,
+    type: 'textured',
     diffuse?: TImageRawWrap,
     interpolation: TTexelInterpolation,
     extension: TTexelExtension,
@@ -57,7 +56,7 @@ export class MaterialMapManager {
     public changeTransparencyType(materialName: string, newTransparencyType: TTransparencyTypes) {
         const currentMaterial = this.getMaterial(materialName);
         ASSERT(currentMaterial !== undefined, 'Cannot change transparency type of non-existent material');
-        ASSERT(currentMaterial.type === MaterialType.textured);
+        ASSERT(currentMaterial.type === 'textured');
 
         switch (newTransparencyType) {
             case 'None':
@@ -90,7 +89,7 @@ export class MaterialMapManager {
      * Convert a material to a new type, i.e. textured to solid.
      * Will return if the material is already the given type.
      */
-    public changeMaterialType(materialName: string, newMaterialType: MaterialType) {
+    public changeMaterialType(materialName: string, newMaterialType: OtS_MaterialType) {
         const currentMaterial = this.getMaterial(materialName);
         ASSERT(currentMaterial !== undefined, 'Cannot change material type of non-existent material');
 
@@ -99,27 +98,25 @@ export class MaterialMapManager {
         }
 
         switch (newMaterialType) {
-            case MaterialType.solid:
-                ASSERT(currentMaterial.type === MaterialType.textured, 'Old material expect to be texture');
+            case 'solid':
+                ASSERT(currentMaterial.type === 'textured', 'Old material expect to be texture');
                 this._setMaterial(materialName, {
                     name: materialName,
-                    type: MaterialType.solid,
+                    type: 'solid',
                     colour: RGBAUtil.randomPretty(),
                     canBeTextured: true,
-                    needsAttention: true,
                 });
                 break;
-            case MaterialType.textured:
-                ASSERT(currentMaterial.type === MaterialType.solid, 'Old material expect to be solid');
+            case 'textured':
+                ASSERT(currentMaterial.type === 'solid', 'Old material expect to be solid');
                 this._setMaterial(materialName, {
                     name: materialName,
-                    type: MaterialType.textured,
+                    type: 'textured',
                     transparency: {
                         type: 'None',
                     },
                     extension: 'repeat',
                     interpolation: 'linear',
-                    needsAttention: true,
                     diffuse: undefined,
                 });
                 break;
diff --git a/src/runtime/ots_mesh.ts b/src/runtime/ots_mesh.ts
index 7830ec8..edb01a9 100644
--- a/src/runtime/ots_mesh.ts
+++ b/src/runtime/ots_mesh.ts
@@ -1,6 +1,6 @@
 import { Bounds } from './bounds';
 import { RGBAColours, RGBAUtil } from './colour';
-import { Material, MaterialMapManager, MaterialType, SolidMaterial } from './materials';
+import { Material, MaterialMapManager, SolidMaterial } from './materials';
 import { degreesToRadians } from './math';
 import { UV } from "./util";
 import { Vector3 } from "./vector";
@@ -121,7 +121,7 @@ export class OtS_Mesh {
         for (let i = 0; i < this._materials.length; ++i) {
             const oldMaterial = this._materials[i];
             if (oldMaterial.name === newMaterial.name) {
-                if (oldMaterial.type === MaterialType.solid && newMaterial.type === MaterialType.textured && !oldMaterial.canBeTextured) {
+                if (oldMaterial.type === 'solid' && newMaterial.type === 'textured' && !oldMaterial.canBeTextured) {
                     return false; // Assigning a texture material to a non-textureable material
                 }
 
@@ -255,8 +255,7 @@ export function TEMP_CONVERT_MESH(vertices: Vector3[], uvs: UV[], tris: Tri[]):
                 name: materialName,
                 canBeTextured: hasTexcoords,
                 colour: RGBAUtil.copy(RGBAColours.WHITE),
-                needsAttention: false,
-                type: MaterialType.solid,
+                type: 'solid',
             }
 
             materials.push(material);
diff --git a/src/runtime/ots_mesh_texture_loader.ts b/src/runtime/ots_mesh_texture_loader.ts
index 84a6ed1..d5b2b59 100644
--- a/src/runtime/ots_mesh_texture_loader.ts
+++ b/src/runtime/ots_mesh_texture_loader.ts
@@ -1,4 +1,3 @@
-import { MaterialType } from "./materials";
 import { OtS_Mesh } from "./ots_mesh";
 import { Texture } from "./texture";
 
@@ -13,7 +12,7 @@ export class OtS_Mesh_TextureLoader {
         this._textures.clear();
 
         mesh.getMaterials().forEach((material) => {
-            if (material.type === MaterialType.textured) {
+            if (material.type === 'textured') {
                 this._textures.set(
                     material.name,
                     new Texture({ 
diff --git a/src/runtime/ots_voxel_mesh_converter.ts b/src/runtime/ots_voxel_mesh_converter.ts
index 98c7eea..dd99571 100644
--- a/src/runtime/ots_voxel_mesh_converter.ts
+++ b/src/runtime/ots_voxel_mesh_converter.ts
@@ -9,7 +9,6 @@ import { RGBA, RGBAColours, RGBAUtil } from './colour';
 import { OtS_Mesh, OtS_Triangle } from './ots_mesh';
 import { ASSERT } from './util/error_util';
 import { OtS_Mesh_TextureLoader } from './ots_mesh_texture_loader';
-import { MaterialType } from './materials';
 
 export type OtS_VoxelMesh_ConverterConfig = {
     constraintAxis: TAxis,
@@ -128,7 +127,7 @@ export class OtS_VoxelMesh_Converter {
     }
 
     private _getVoxelColour(mesh: OtS_Mesh, triangle: OtS_Triangle, location: Vector3): RGBA {
-        if (triangle.material.type === MaterialType.solid) {
+        if (triangle.material.type === 'solid') {
             return RGBAUtil.copy(triangle.material.colour);
         }
 
@@ -150,7 +149,7 @@ export class OtS_VoxelMesh_Converter {
             RGBAUtil.copy(RGBAColours.MAGENTA);
         }
 
-        ASSERT(triangle.material.type === MaterialType.textured);
+        ASSERT(triangle.material.type === 'textured');
         const texture = this._textureLoader.getTexture(triangle.material.name);
         if (texture !== undefined) {
             return texture.getRGBA(uv, triangle.material.interpolation, triangle.material.extension);