Once all the olives were pureed, the workers transferred the paste to the trough next to the fireplace. They put a goat's hair sack inside a wooden crate, which acted as a mold, poured the paste inside, and folded it like an envelope. They lifted the filled sack out of the crate and placed it under the pressing machine. When enough sacks were collected, stacked one on top of the other, the pressing began.
At the start, workers turned a large wooden shaft, the "manella," by hand to rotate it down the threads of the press. Throughout this work, another worker poured hot water from a cauldron over the sacks in order to facilitate the running of the oil. Towards the end, and to achieve the best possible compression, they connected the manella with another machine, the "mangana," using a system of pulleys and ropes. The handles of the manganas were turned, the ropes wound tighter, the manella turned, and the press rotated down on its threads, compressing the sacks as much as possible.
The oil, along with the hot water, flowed into the collecting trough which was divided into two parts. There oil-water separation was done by the simple gravity method of allowing the liquid to settle. The oil, being lighter (less dense), floated on top of the heavier (denser) water and emptied into the right-hand trough, while the water left through a gutter in the floor. Afterwards, they collected the golden olive oil with metal cups called "metradia," stored it in containers, and gave it to each head of household. In this way, the grinding process was completed.