One of the biggest advantages is the ability to work much more efticiently. In practice if the painters are planning a break at 12 noon they will normally stop mixing filler at around 11.40 if done by hand. With the machine it only takes a push of the button and more filler is produced immediately, enabling the painters to continue filling. The machines are very easy to operate - a simple push of the button and the filler comes out ready mixed at a capacity of 4-5 litres per minute. (2 x 60 litres A component and 60 litres B component) suitable for mixing filler at a ratio of 2:1.