Index: src/widgets/3dview/gridmesh.h
===================================================================
--- src/widgets/3dview/gridmesh.h
+++ src/widgets/3dview/gridmesh.h
@@ -1,6 +1,7 @@
 /* Atelier KDE Printer Host for 3D Printing
-    Copyright (C) <2017>
+    Copyright (C) <2017-2018>
     Author: Patrick José Pereira - patrickjp@kde.org
+            Kevin Ottens - ervin@kde.org
 
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -18,6 +19,7 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
+
 #pragma once
 
 #include <QObject>
Index: src/widgets/3dview/gridmesh.cpp
===================================================================
--- src/widgets/3dview/gridmesh.cpp
+++ src/widgets/3dview/gridmesh.cpp
@@ -1,6 +1,7 @@
 /* Atelier KDE Printer Host for 3D Printing
-    Copyright (C) <2017>
+    Copyright (C) <2017-2018>
     Author: Patrick José Pereira - patrickjp@kde.org
+            Kevin Ottens - ervin@kde.org
 
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -18,8 +19,8 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
+
 #include <QGeometryRenderer>
-#include <QVector4D>
 #include <QVector3D>
 #include <QVector2D>
 #include "gridmesh.h"
@@ -33,13 +34,13 @@
     setPrimitiveType(Qt3DRender::QGeometryRenderer::Lines);
 
     QVector2D s(20, 20);
-    QList<QVector4D> vertices;
+    QList<QVector3D> vertices;
     for (uint i = 0; i <= s.x(); i++) {
         for (uint j = 0; j <= s.y(); j++) {
-            vertices.append(QVector4D(i, 0, 0, 0));
-            vertices.append(QVector4D(i, j, 0, 0));
-            vertices.append(QVector4D(0, j, 0, 0));
-            vertices.append(QVector4D(i, j, 0, 0));
+            vertices.append(QVector3D(i, 0, 0));
+            vertices.append(QVector3D(i, j, 0));
+            vertices.append(QVector3D(0, j, 0));
+            vertices.append(QVector3D(i, j, 0));
         }
     }
 
Index: src/widgets/3dview/linemesh.h
===================================================================
--- src/widgets/3dview/linemesh.h
+++ src/widgets/3dview/linemesh.h
@@ -18,6 +18,7 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
+
 #pragma once
 
 #include <QList>
@@ -28,7 +29,6 @@
 
 class LineMeshGeometry;
 class QString;
-class QVector4D;
 
 class LineMesh : public Qt3DRender::QGeometryRenderer
 {
@@ -48,5 +48,4 @@
 private:
     GcodeTo4D _gcode;
     LineMeshGeometry *_lineMeshGeo;
-    QList<QVector4D> _vertices;
 };
Index: src/widgets/3dview/linemesh.cpp
===================================================================
--- src/widgets/3dview/linemesh.cpp
+++ src/widgets/3dview/linemesh.cpp
@@ -1,6 +1,7 @@
 /* Atelier KDE Printer Host for 3D Printing
-    Copyright (C) <2017>
+    Copyright (C) <2017-2018>
     Author: Patrick José Pereira - patrickjp@kde.org
+            Kevin Ottens - ervin@kde.org
 
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -18,6 +19,7 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
+
 #include <QGeometryRenderer>
 #include <QVector3D>
 #include <QVector4D>
@@ -54,8 +56,15 @@
 
 void LineMesh::posUpdate(const QList<QVector4D> &pos)
 {
-    _vertices = pos;
-    _lineMeshGeo = new LineMeshGeometry(_vertices, this);
+    QList<QVector3D> vertices;
+    vertices.reserve(pos.size());
+    std::transform(pos.cbegin(), pos.cend(),
+                   std::back_inserter(vertices),
+                   [](const QVector4D & x) {
+                       return x.toVector3D();
+                   });
+
+    _lineMeshGeo = new LineMeshGeometry(vertices, this);
     setVertexCount(_lineMeshGeo->vertexCount());
     setGeometry(_lineMeshGeo);
     emit finished();
Index: src/widgets/3dview/linemeshgeometry.h
===================================================================
--- src/widgets/3dview/linemeshgeometry.h
+++ src/widgets/3dview/linemeshgeometry.h
@@ -1,6 +1,7 @@
 /* Atelier KDE Printer Host for 3D Printing
-    Copyright (C) <2017>
+    Copyright (C) <2017-2018>
     Author: Patrick José Pereira - patrickjp@kde.org
+            Kevin Ottens - ervin@kde.org
 
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -18,6 +19,7 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
+
 #pragma once
 
 #include <QAttribute>
@@ -29,7 +31,7 @@
     Q_OBJECT
 
 public:
-    LineMeshGeometry(const QList<QVector4D> &vertices, Qt3DCore::QNode *parent = Q_NULLPTR);
+    LineMeshGeometry(const QList<QVector3D> &vertices, Qt3DCore::QNode *parent = Q_NULLPTR);
     ~LineMeshGeometry();
     int vertexCount();
 
Index: src/widgets/3dview/linemeshgeometry.cpp
===================================================================
--- src/widgets/3dview/linemeshgeometry.cpp
+++ src/widgets/3dview/linemeshgeometry.cpp
@@ -1,6 +1,7 @@
 /* Atelier KDE Printer Host for 3D Printing
-    Copyright (C) <2017>
+    Copyright (C) <2017-2018>
     Author: Patrick José Pereira - patrickjp@kde.org
+            Kevin Ottens - ervin@kde.org
 
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -18,12 +19,12 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
+
 #include <QList>
 #include <QVector3D>
-#include <QVector4D>
 #include "linemeshgeometry.h"
 
-LineMeshGeometry::LineMeshGeometry(const QList<QVector4D> &vertices, Qt3DCore::QNode *parent) :
+LineMeshGeometry::LineMeshGeometry(const QList<QVector3D> &vertices, Qt3DCore::QNode *parent) :
     Qt3DRender::QGeometry(parent)
     , _positionAttribute(new Qt3DRender::QAttribute(this))
     , _vertexBuffer(new Qt3DRender::QBuffer(Qt3DRender::QBuffer::VertexBuffer, this))
@@ -36,7 +37,7 @@
         rawVertexArray[idx++] = v.x();
         rawVertexArray[idx++] = v.y();
         rawVertexArray[idx++] = v.z();
-        _vertices.append(v.toVector3D());
+        _vertices.append(v);
     }
 
     _vertexBuffer->setData(vertexBufferData);