Oil painting essential materials: Selection of BRUSHES Selection.—Never buy a brush without testing its evenness, as has been advised in the care of sables. Feel carefully the end of the bristles also, and see that the “flag” is there. All brushes are kept together for packing by paste in the bristles. See that this is soaked off before you test your brush. Round or Flat.—It will make little difference whether you use round or flat brushes. The flat brush is most commonly preferred now, and most brushes are made that way. So you had better get that kind, unless you have some special reason for preferring the round ones. Handles.—Whether the handles are nicely polished, also, is of no importance….