I want to add a sand tank in front of the 3D sand printer. The 3D-sand printer needs to be filled once every two printing processes. The sand tank has a cylindrical shape, and it fills the tanks shown in the model; there is no need to show sophisticated animation. The sand tank is filled with a sack lifted by a forklift. The forklift will not fill the tank until an order is signaled on the 3D-sand printer.