diff --git a/dust3d/mesh/mesh_generator.cc b/dust3d/mesh/mesh_generator.cc
index 52886396..40f2f83b 100644
--- a/dust3d/mesh/mesh_generator.cc
+++ b/dust3d/mesh/mesh_generator.cc
@@ -38,6 +38,7 @@
 #include <dust3d/mesh/trim_vertices.h>
 #include <dust3d/mesh/tube_mesh_builder.h>
 #include <dust3d/mesh/weld_vertices.h>
+#include <dust3d/mesh/box_mesh.h>
 #include <functional>
 
 namespace dust3d {
@@ -663,23 +664,28 @@ std::unique_ptr<MeshCombiner::Mesh> MeshGenerator::combinePartMesh(const std::st
     partCache.joined = (target == PartTarget::Model && !isDisabled);
 
     if (PartTarget::Model == target) {
-        std::unique_ptr<TubeMeshBuilder> tubeMeshBuilder;
-        TubeMeshBuilder::BuildParameters buildParameters;
-        buildParameters.deformThickness = deformThickness;
-        buildParameters.deformWidth = deformWidth;
-        buildParameters.deformUnified = deformUnified;
-        buildParameters.baseNormalRotation = cutRotation * Math::Pi;
-        buildParameters.cutFace = cutTemplate;
-        buildParameters.frontEndRounded = buildParameters.backEndRounded = rounded;
-        tubeMeshBuilder = std::make_unique<TubeMeshBuilder>(buildParameters, std::move(meshNodes), isCircle);
-        tubeMeshBuilder->build();
-        partCache.vertices = tubeMeshBuilder->generatedVertices();
-        partCache.faces = tubeMeshBuilder->generatedFaces();
-        if (!__mirrorFromPartId.empty()) {
-            for (auto& it : partCache.vertices)
-                it.setX(-it.x());
-            for (auto& it : partCache.faces)
-                std::reverse(it.begin(), it.end());
+        if (1 == meshNodes.size()) {
+            size_t subdivideTimes = subdived ? 1 : 0;
+            buildBoxMesh(meshNodes[0].origin, meshNodes[0].radius, subdivideTimes, partCache.vertices, partCache.faces);
+        } else {
+            std::unique_ptr<TubeMeshBuilder> tubeMeshBuilder;
+            TubeMeshBuilder::BuildParameters buildParameters;
+            buildParameters.deformThickness = deformThickness;
+            buildParameters.deformWidth = deformWidth;
+            buildParameters.deformUnified = deformUnified;
+            buildParameters.baseNormalRotation = cutRotation * Math::Pi;
+            buildParameters.cutFace = cutTemplate;
+            buildParameters.frontEndRounded = buildParameters.backEndRounded = rounded;
+            tubeMeshBuilder = std::make_unique<TubeMeshBuilder>(buildParameters, std::move(meshNodes), isCircle);
+            tubeMeshBuilder->build();
+            partCache.vertices = tubeMeshBuilder->generatedVertices();
+            partCache.faces = tubeMeshBuilder->generatedFaces();
+            if (!__mirrorFromPartId.empty()) {
+                for (auto& it : partCache.vertices)
+                    it.setX(-it.x());
+                for (auto& it : partCache.faces)
+                    std::reverse(it.begin(), it.end());
+            }
         }
     } else if (PartTarget::CutFace == target) {
         std::unique_ptr<SectionPreviewMeshBuilder> sectionPreviewMeshBuilder;