Art Spectrum Painting Medium No 1 Varnishing Watercolours Blog If you wish to crackle

If you wish to crackle a background and paint a design directly over it

MM31 Open Medium is formulated to be mixed with either Matisse Structure or Matisse Flow acrylic colours to assist in prolonging drying time while maintaining the consistency of the paint

Oil Painting

will not chip or crack on canvas

Art Spectrum Painting Medium No 1 Varnishing Watercolours Blog If you wish to crackleThe leanest medium. Ready to use straight from the container. Dries overnight, depending on climate and thickness of paint application. Often an excessive amount of gum turpentine is used as a substitute for a 'lean' medium. Too much gum turpentine 'denatures' the oil paint in these lean layers. This leaves an underbound pigment when the paint dries which weakens the bond between the oil paint and the canvas. Art Spectrum Medium No. 1 contains a