The grooves in the vinyl are pressed into it using a stamper after hot vinyl pellets have been moulded into a disc form.The process of creating vinyl records, which are discs that hold analogue audio recordings, is called record pressing. Creating a master recording, usually on tape or digital media, is the first step in the multi-phase process. After that, a stamper—a negative image of the recording engraved onto a metal disc—is made using this master.