Hello all y'all!
I'm learning to oil paint using Mark's methods and recipes. Today I began to mix my slow-dry medium with my Windsor and Newton Winton oil paints. I read on the supply page that for Burnt Umber, one must put in 3 tsp of clove oil (for 37ml of paint) to help it last longer before drying, in addition to the slow-dry medium. I did so, and unlike my other paints, the mixture became lumpy and after 30 minutes of trying to mix the ingredients, I still was unable to work out the lumps. I'm worrying I may have put too much clove oil in there.
Has anyone else had this problem and know how to fix it?