.. _safety_stand: Safety Stand ============= If you don't have aluminum extrusions by hand, you can purchase the safety stand section as listed in the :ref:`bill_of_materials`. We present one solution as shown in the image below. We use 300mm 4040 aluminum extrusions (\*3), 700mm 4040 aluminum extrusion (\*1), and 100mm 2020 aluminum extrusion (\*1). For the 4040s, 7ou can use 500mm 4040 aluminum extrusions (\*4) as in the bill of materials without any problem. Pay attention to how we arrange the extrusions and place the connectors to maximize the stability of the stand. We use 5 sets of 4040 corner connectors in total. For the 3D-printed connector between 2020 and 4040, you can find the sliced plate in the `MakerWorld `_ and the CAD file in the `Onshape document `_. We also put optional 3D-printed feet in the same document in case you want to avoid scratching the floor or the table. .. note:: This is not the only possible solution, but it is essential to ensure strong support along the axis where a significant torque will be applied when mounting the robot onto the stand. .. image:: ../_static/safety_stand.png :alt: Safety Stand :align: center :width: 100%