In the studio of French sculptor Daniel Druet, the conceptual artist Maurizio Cattelan is everywhere: In framed magazine covers depicting Cattelan’s sculptures Him (2001), La Nona Ora (1999), and the two upside-down American police officers Frank and Jamie (2002). Then there is the likeness of the Italian provocateur himself—looking cartoon-like in wax busts on wooden poles, his drawn cheeks a little fuller than in real life. The wax Cattelan’s eyes are characteristically wide open, and Druet gave him a rather pleasant smile.
“I never said he wasn’t a nice person. I just don’t have much affinity with him,” Druet said on a recent afternoon at his studio...