diff --git a/src/mainwindow.h b/src/mainwindow.h
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -51,6 +51,8 @@
 
 protected:
     void closeEvent(QCloseEvent *event);
+    void dragEnterEvent(QDragEnterEvent *event);
+    void dropEvent(QDropEvent *event);
 
 private:
     GCodeEditorWidget *m_gcodeEditor;
@@ -63,8 +65,10 @@
     void atCoreInstanceNameChange(const QString &name);
     QString getTheme();
     void initWidgets();
+    void loadFile(const QUrl &fileName);
     void newAtCoreInstance();
-    void openFile();
+    void openActionTriggered();;
+    void processDropEvent(const QList<QUrl> &fileList);
     void setupActions();
     void setupLateralArea();
     void toggleGCodeActions();
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -40,6 +40,8 @@
 {
     initWidgets();
     setupActions();
+    setAcceptDrops(true);
+
     connect(m_instances, &QTabWidget::tabCloseRequested, [this](int index) {
         auto tempWidget = qobject_cast<AtCoreInstanceWidget *>(m_instances->widget(index));
         if (tempWidget->isPrinting()) {
@@ -78,6 +80,31 @@
     disconnect(m_gcodeEditor, &GCodeEditorWidget::updateClientFactory, this, &MainWindow::updateClientFactory);
 }
 
+void MainWindow::dragEnterEvent(QDragEnterEvent *event)
+{
+    event->accept();
+}
+
+void MainWindow::dropEvent(QDropEvent *event)
+{
+    const QMimeData *mimeData = event->mimeData();
+    if (mimeData->hasUrls()) {
+        processDropEvent(mimeData->urls());
+    }
+}
+
+void MainWindow::processDropEvent(const QList<QUrl> &fileList)
+{
+    for (const auto &url : fileList) {
+        //Loop thru the urls and only load ones ending our "supported" formats
+        QString ext = url.toLocalFile().split('.').last();
+        if (ext.contains("gcode", Qt::CaseInsensitive)
+                || ext.contains("gco", Qt::CaseInsensitive)) {
+            loadFile(url);
+        }
+    }
+}
+
 void MainWindow::initWidgets()
 {
     setupLateralArea();
@@ -186,7 +213,11 @@
 
     m_gcodeEditor = new GCodeEditorWidget(this);
     connect(m_gcodeEditor, &GCodeEditorWidget::updateClientFactory, this, &MainWindow::updateClientFactory);
-    setupButton("3d", i18n("&3D"), QIcon::fromTheme("draw-cuboid", QIcon(QString(":/%1/3d").arg(m_theme))), new Viewer3D(this));
+
+    auto *viewer3D = new Viewer3D(this);
+    connect(viewer3D, &Viewer3D::droppedUrls, this, &MainWindow::processDropEvent);
+
+    setupButton("3d", i18n("&3D"), QIcon::fromTheme("draw-cuboid", QIcon(QString(":/%1/3d").arg(m_theme))), viewer3D);
     setupButton("gcode", i18n("&GCode"), QIcon::fromTheme("accessories-text-editor", QIcon(":/icon/edit")), m_gcodeEditor);
     setupButton("video", i18n("&Video"), QIcon::fromTheme("camera-web", QIcon(":/icon/video")), new VideoMonitorWidget(this));
     buttonLayout->addStretch();
@@ -202,7 +233,7 @@
 
     action->setText(i18n("&Open"));
     actionCollection()->setDefaultShortcut(action, QKeySequence::Open);
-    connect(action, &QAction::triggered, this, &MainWindow::openFile);
+    connect(action, &QAction::triggered, this, &MainWindow::openActionTriggered);
 
     action = actionCollection()->addAction(QStringLiteral("new_instance"));
     action->setIcon(QIcon::fromTheme("list-add", QIcon(QString(":/%1/addTab").arg(m_theme))));
@@ -231,15 +262,21 @@
     setupGUI(Default, "atelierui");
 }
 
-void MainWindow::openFile()
+void MainWindow::openActionTriggered()
 {
-    QUrl fileName = QFileDialog::getOpenFileUrl(
-                        this
-                        , i18n("Open GCode")
-                        , QUrl::fromLocalFile(QDir::homePath())
-                        , i18n("GCode(*.gco *.gcode);;All Files(*.*)")
-                    );
+    QList<QUrl> fileList = QFileDialog::getOpenFileUrls(
+                               this
+                               , i18n("Open GCode")
+                               , QUrl::fromLocalFile(QDir::homePath())
+                               , i18n("GCode(*.gco *.gcode);;All Files(*.*)")
+                           );
+    for (const auto &url : fileList) {
+        loadFile(url);
+    }
+}
 
+void MainWindow::loadFile(const QUrl &fileName)
+{
     if (!fileName.isEmpty()) {
 
         m_lateral.get<GCodeEditorWidget>("gcode")->loadFile(fileName);
diff --git a/src/widgets/3dview/viewer3d.h b/src/widgets/3dview/viewer3d.h
--- a/src/widgets/3dview/viewer3d.h
+++ b/src/widgets/3dview/viewer3d.h
@@ -1,6 +1,7 @@
 /* Atelier KDE Printer Host for 3D Printing
     Copyright (C) <2017>
     Author: Patrick José Pereira - patrickjp@kde.org
+            Chris Rizzitello - rizzitello@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
@@ -31,6 +32,9 @@
 {
     Q_OBJECT
 
+public slots:
+    void dropCatch(const QVariant &var);
+
 public:
     explicit Viewer3D(QWidget *parent = nullptr);
     ~Viewer3D() override;
@@ -40,4 +44,7 @@
     LineMesh *_lineMesh;
     QQmlApplicationEngine _engine;
     QQuickView *_view;
+
+signals:
+    void droppedUrls(QList<QUrl> fileList);
 };
diff --git a/src/widgets/3dview/viewer3d.cpp b/src/widgets/3dview/viewer3d.cpp
--- a/src/widgets/3dview/viewer3d.cpp
+++ b/src/widgets/3dview/viewer3d.cpp
@@ -1,6 +1,7 @@
 /* Atelier KDE Printer Host for 3D Printing
     Copyright (C) <2017>
     Author: Patrick José Pereira - patrickjp@kde.org
+            Chris Rizzitello - rizzitello@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
@@ -50,13 +51,21 @@
     _view->setSource(QUrl(QStringLiteral("qrc:/viewer3d.qml")));
     QHBoxLayout *mainLayout = new QHBoxLayout;
     mainLayout->addWidget(QWidget::createWindowContainer(_view));
+    QObject *item = _view->rootObject();
+    //Connect the drop pass from the QML part.
+    connect(item, SIGNAL(droppedUrls(QVariant)), this, SLOT(dropCatch(QVariant)));
     this->setLayout(mainLayout);
 }
 
 Viewer3D::~Viewer3D()
 {
 }
 
+void Viewer3D::dropCatch(const QVariant &var)
+{
+    emit droppedUrls(var.value<QList<QUrl> >());
+}
+
 void Viewer3D::drawModel(QString file)
 {
     QObject *object = _view->rootObject();
diff --git a/src/widgets/3dview/viewer3d.qml b/src/widgets/3dview/viewer3d.qml
--- a/src/widgets/3dview/viewer3d.qml
+++ b/src/widgets/3dview/viewer3d.qml
@@ -6,6 +6,16 @@
     id: item
     width: 1000
     height: 1000
+    signal droppedUrls (var urls)
+
+    DropArea {
+        id: dropArea
+        anchors.fill: parent
+        onDropped: if(drop.hasUrls) {
+            droppedUrls(drop.urls)
+        }
+    }
+
     Rectangle {
         id: scene
         anchors.fill: parent