diff --git a/share/resources/cursor.qrc b/share/resources/cursor.qrc
index 0af6dcf3b..4e9cd2b99 100644
--- a/share/resources/cursor.qrc
+++ b/share/resources/cursor.qrc
@@ -17,5 +17,6 @@
         <file>cursor/pointofintersect_cursor.png</file>
         <file>cursor/spline_cut_point_cursor.png</file>
         <file>cursor/splinepath_cut_point_cursor.png</file>
+        <file>cursor/union_cursor.png</file>
     </qresource>
 </RCC>
diff --git a/share/resources/cursor/union_cursor.png b/share/resources/cursor/union_cursor.png
new file mode 100644
index 000000000..687d2ca59
Binary files /dev/null and b/share/resources/cursor/union_cursor.png differ
diff --git a/share/resources/icon.qrc b/share/resources/icon.qrc
index 85c2c0ddf..8ba3c5058 100644
--- a/share/resources/icon.qrc
+++ b/share/resources/icon.qrc
@@ -39,5 +39,6 @@
         <file>icon/32x32/point_of_intersection.png</file>
         <file>icon/32x32/spline_cut_point.png</file>
         <file>icon/32x32/splinePath_cut_point.png</file>
+        <file>icon/32x32/union.png</file>
     </qresource>
 </RCC>
diff --git a/share/resources/icon/32x32/union.png b/share/resources/icon/32x32/union.png
new file mode 100644
index 000000000..5c8ad9c88
Binary files /dev/null and b/share/resources/icon/32x32/union.png differ
diff --git a/src/mainwindow.ui b/src/mainwindow.ui
index 9c7943fb8..674702e62 100644
--- a/src/mainwindow.ui
+++ b/src/mainwindow.ui
@@ -40,14 +40,14 @@
        <string/>
       </property>
       <property name="currentIndex">
-       <number>4</number>
+       <number>3</number>
       </property>
       <widget class="QWidget" name="page">
        <property name="geometry">
         <rect>
          <x>0</x>
          <y>0</y>
-         <width>150</width>
+         <width>144</width>
          <height>150</height>
         </rect>
        </property>
@@ -302,7 +302,7 @@
         <rect>
          <x>0</x>
          <y>0</y>
-         <width>150</width>
+         <width>100</width>
          <height>58</height>
         </rect>
        </property>
@@ -378,7 +378,7 @@
         <rect>
          <x>0</x>
          <y>0</y>
-         <width>150</width>
+         <width>100</width>
          <height>104</height>
         </rect>
        </property>
@@ -596,6 +596,26 @@
           </property>
          </widget>
         </item>
+        <item row="0" column="1">
+         <widget class="QToolButton" name="toolButton">
+          <property name="text">
+           <string>...</string>
+          </property>
+          <property name="icon">
+           <iconset resource="../share/resources/icon.qrc">
+            <normaloff>:/icon/32x32/union.png</normaloff>:/icon/32x32/union.png</iconset>
+          </property>
+          <property name="iconSize">
+           <size>
+            <width>32</width>
+            <height>32</height>
+           </size>
+          </property>
+          <property name="checkable">
+           <bool>true</bool>
+          </property>
+         </widget>
+        </item>
        </layout>
       </widget>
      </widget>