To follow the “fat over lean”, can water be substituted for turpentine?
In terms of “fat over lean” water can be thought of as a solvent for Artisan. For best results do not use water. Although Artisan is fully mixable with water, Artisan Thinner has a stronger solvency than water. This means that Artisan will accept comparatively more Artisan Thinner than water. Therefore Artisan can be thinned further with Artisan Thinner than with water in lower layers. In addition Artisan thinned with Thinner feels slightly better on the brush than Artisan thinned with water. Whether water or Thinner have been used, it will be possible to clean the brushes with water. For further information click here.