This preparation is one that I have used for many years with great results - easy to make and the paint not only moves easily across a variety of surfaces but adds to the lush characteristics of the oil paint.
[I have also used this preparation to make putty medium].
1v of Liquin Original [Winsor & Newton]
1/2v Linseed Oil
1/2v Stand Oil
Blend well - make sure to mark your container/jar with the recipe and note as flow medium.
Using a clean large board [white tile or formica shelving is good] or large plastic plate
Add a cup of calcite to one side
In the centre add your flow medium - a quarter of a cup
[I also make the putty using Stand Oil or When I have cleaned my own oil - refer to the calcite sun oil website - I use that]
Slowly with a palette knife bring small amounts of the calcite over into the oil and work well until absorbed into the oil - continue until the oil looks like putty - it should reach the consistency of chewing gum.
Put the putty into a glass jar and seal with a tight lid.
I use the putty medium in equal amounts- 1v of putt to 1v of paint - it will extend the amount of paint you use and at the same time provide the paint with extra body - if you use the recipe with the liquin as mentioned above you will have the added benefit of the paint drying faster.