diff --git a/src/meshgenerator.cpp b/src/meshgenerator.cpp
index 46b3329d..82cf55bf 100644
--- a/src/meshgenerator.cpp
+++ b/src/meshgenerator.cpp
@@ -784,7 +784,9 @@ MeshCombiner::Mesh *MeshGenerator::combinePartMesh(const QString &partIdString,
         m_partPreviewMeshes[partId] = new Model(partPreviewVertices,
             partCache.previewTriangles,
             partPreviewTriangleVertexNormals,
-            partPreviewColor);
+            partPreviewColor,
+            metalness,
+            roughness);
     }
     
     delete strokeModifier;
diff --git a/src/model.cpp b/src/model.cpp
index 3a4cc226..67802c7d 100644
--- a/src/model.cpp
+++ b/src/model.cpp
@@ -89,7 +89,9 @@ Model::Model(ShaderVertex *triangleVertices, int vertexNum, ShaderVertex *edgeVe
 
 Model::Model(const std::vector<QVector3D> &vertices, const std::vector<std::vector<size_t>> &triangles,
     const std::vector<std::vector<QVector3D>> &triangleVertexNormals,
-    const QColor &color)
+    const QColor &color,
+    float metalness,
+    float roughness)
 {
     m_triangleVertexCount = triangles.size() * 3;
     m_triangleVertices = new ShaderVertex[m_triangleVertexCount];
@@ -112,8 +114,8 @@ Model::Model(const std::vector<QVector3D> &vertices, const std::vector<std::vect
             dest->normX = srcNormal->x();
             dest->normY = srcNormal->y();
             dest->normZ = srcNormal->z();
-            dest->metalness = m_defaultMetalness;
-            dest->roughness = m_defaultRoughness;
+            dest->metalness = metalness;
+            dest->roughness = roughness;
             dest->tangentX = 0;
             dest->tangentY = 0;
             dest->tangentZ = 0;
diff --git a/src/model.h b/src/model.h
index 53207292..58371ea1 100644
--- a/src/model.h
+++ b/src/model.h
@@ -20,7 +20,9 @@ class Model
 public:
     Model(const std::vector<QVector3D> &vertices, const std::vector<std::vector<size_t>> &triangles,
         const std::vector<std::vector<QVector3D>> &triangleVertexNormals,
-        const QColor &color=Qt::white);
+        const QColor &color=Qt::white,
+        float metalness=0.0,
+        float roughness=0.0);
     Model(Outcome &outcome);
     Model(ShaderVertex *triangleVertices, int vertexNum, ShaderVertex *edgeVertices=nullptr, int edgeVertexCount=0);
     Model(const Model &mesh);