South Africa has nurtured many creative families, ranging from the Matshikiza clan in the performing arts to the Wafers and Welzes in the fine arts. Jonah Sack, whose new exhibition of loosely figurative oil paintings and frail architectural sculptures is currently on view at Cape Town's Blank Projects, also comes from a family of artists.His father, Steven, is a sculptor, his mother, Ruth, a painter.Now in his late 30s, Sack has, nonetheless, managed to forge a distinctive career path in the family business. After first garnering attention in the mid-aughts with considered drawings of little dramas on paper, he expanded into sculpture.Using dowel sticks and not much else, he likes to create rickety sculptures that sometimes house his drawings. Obstruction, his show at Blank Projects, includes examples of this, as well as a freestanding work that quotes Constantin Brâncui's oak sculpture Endless Column (1918).Last year, for his show Column at Gallery AOP in Johannesburg, Sack decided to try something new: painting. Similar to his first suite of paintings from last year, Sack's new works - muted studies of incomplete figures and unpeopled rural landscapes - have been painted directly onto blocks of wood.Simon Stone - a Sack family friend - is the clearest influence."Simon, Arlene Amaler-Raviv and my mother are the three models who I think of as painters," he said."Obstruction" is on at Blank Projects until 9 April..