How does the “fat over lean” rule apply to the use of Liquin?
Fat over lean is better understood if considered as ‘flexible over less flexible’. When painting in layers, the proportion of medium used in each layer should be increased. The higher proportion of medium makes subsequent layers more flexible and prevents the painting from cracking. This rule has traditionally been kept by adding more and more oil to the solvent used. However, as Liquin is now more commonly used, it is the Liquin content which is increased. There is no need to use oil as well. Following this may appear to be against the “slow drying over fast drying” rule. However, the increase in flexibility obtained, will be sufficient to handle any movement upon drying of the marginally slower drying lower layers. For further information on Hints, Tips & Techniques for Oil click here.
