Abstract: A panel grooving apparatus has a table for supporting a panel at a working level. A rail extends along a side of the table and a working assembly is mobile on that rail. The working assembly is selectively immobilized in various grooving positions by stops movable and selectively arrestable along the rail and engageable by part of said working assembly. The panel is releasably retained on the table by movable peripheral elements thereon. In a simplified embodiment, the working table may be reduced to a ruler on which a shoe of a rectilinear guide slides.