An apparatus including a delivery device including a tray, and a device for changing the tray from a receiving state to a dumping state; a device for supplying one or more materials to the delivery device, while the tray of the delivery device is in a receiving state; a track device including a track and a motor; and a mold having an elongated opening, wherein the delivery device is configured to move back and forth on the track of the track device in response to the motor of the track device; wherein the track of the track device is substantially parallel to the elongated opening of the mold; and wherein the device for changing the tray from the receiving state to the dumping state causes one or more materials to fall from the tray through the elongated opening of the mold into an inner chamber of the mold.