Conventional, verging on the boring, yet oddly captivating. Charles Rays’s sculptures reward prolonged viewing. Three new works in a five-work show at Matthew Marks pick up on art historical references, two others depict the work and study of a craft; yet they all meld the artists’ meticulous study of traditional sculptural practices with ideas that are firmly positioned in the present. Ray asserts his conceptual intention by manipulating the expected with the unfamiliar. Like most of his sculptures, “Mechanic I” and “Mechanic II” are painstakingly carved from stainless steel, but then Ray subverts scale and surface in a way that propel both figures into the uncanny: You have seen it before but yet something is off. At Matthew Marks through June 16.