diff --git a/dust3d/mesh/rope_mesh.cc b/dust3d/mesh/rope_mesh.cc
index 95b40124..9cf4c192 100644
--- a/dust3d/mesh/rope_mesh.cc
+++ b/dust3d/mesh/rope_mesh.cc
@@ -87,9 +87,11 @@ void RopeMesh::addRope(const std::vector<Vector3>& positions, bool isCircle)
     Vector3 baseNormal = isCircle ? BaseNormal::calculateCircleBaseNormal(nodePositions) : BaseNormal::calculateTubeBaseNormal(nodePositions);
     std::vector<std::vector<size_t>> circles;
     circles.reserve(nodePositions.size());
+    Vector3 forwardDirection;
     for (size_t i = 0; i < nodePositions.size(); ++i) {
         size_t j = (i + 1) % nodePositions.size();
-        Vector3 forwardDirection = (nodePositions[j] - nodePositions[i]).normalized();
+        if (isCircle || i + 1 < nodePositions.size())
+            forwardDirection = (nodePositions[j] - nodePositions[i]).normalized();
         auto circlePositions = BaseNormal::calculateCircleVertices(m_buildParameters.defaultRadius,
             m_buildParameters.sectionSegments,
             forwardDirection,
diff --git a/dust3d/mesh/section_preview_mesh_builder.cc b/dust3d/mesh/section_preview_mesh_builder.cc
index 9d12156d..741eb307 100644
--- a/dust3d/mesh/section_preview_mesh_builder.cc
+++ b/dust3d/mesh/section_preview_mesh_builder.cc
@@ -84,7 +84,7 @@ void SectionPreviewMeshBuilder::build()
     RopeMesh ropeMesh(ropeParameters);
     ropeMesh.addRope(cutFaceVertices, true);
     for (size_t i = 0; i < cutFaceVertices.size(); ++i) {
-        ropeMesh.addRope({ cutFaceVertices[i], cutFaceVertices[i] - Vector3(0.0, 0.0, 2.0) }, false);
+        ropeMesh.addRope({ cutFaceVertices[i], cutFaceVertices[i] - Vector3(0.0, 0.0, 1.5) }, false);
     }
     for (const auto& it : ropeMesh.resultVertices()) {
         m_resultVertices.push_back(it);