Abstract: The invention relates to a profile sanding machine which includes a turntable on which a wooden work-piece is mounted; a pneumatic clamping device for clamping said work-piece to said turntable and a pair of sanding units each of which is adjustable in relation to said work-piece at least in a vertical plane. The machine also includes means for moving each sanding unit into and out of sanding contact with the profile of the work-piece and for maintaining the sanding contact under constant pressure during a predetermined number of rotations of the turntable.