Canvas white pigment and calcium carbonate is rather brittle and susceptible to cracking. As lead-based paint is poisonous, care has to be taken in using it. Various alternative and more flexible canvas primers are commercially available, the most popular being a synthetic latex paint composed of titanium dioxide and calcium carbonate, bound with a thermo-plastic emulsion. Many artists have painted onto unprimed canvas, such as Jackson Pollock, Kenneth Noland, Francis Bacon, Helen Frankenthaler, Dan Christensen, Larry Zox, Ronnie Landfield, Color Field painters, Lyrical Abstractionists and others. Staining acrylic paint into the fabric of cotton duck canvas was more benign and less
Charles Pearce (calligrapher) Pearce began to use brushes on canvas rather than pens and paper which gave him the opportunity to work considerably larger than previously. He has developed a technique which involves the throwing of paint onto raw canvas, to create the start of his paintings. He then stretches the canvas onto frames/stretchers which he has designed specially to take the force of stretching the canvas, which doesn't involve any cross-bracing. His largest single canvas to date measures 5 ft by 9 ft. It was on a visit back to Eureka Springs, Arkansas, where he had taught a workshop back in 1988,