Abstract: A method for producing a helical casting pattern. The method including: providing a pattern body having a longitudinal axis, a cavity extending in the direction of the longitudinal axis, and a pattern body wall that surrounds the cavity; providing a processing tool for creating a recess; arranging the pattern body and the processing tool such that the processing tool extends at least partially through the pattern body wall in the radial direction with respect to the longitudinal axis; and rotatably driving at least one of the processing tool and the pattern body about one of the longitudinal axis of the pattern body and an axis parallel thereto, relative to one another, with a relative movement between the pattern body and the processing tool in a direction parallel to the longitudinal axis being produced one of continuously or at least intermittently during or in alternation with the relative rotational movement.

Abstract: A lathe cutting tool is provided for cutting helix grooves into rubber covered rolls for use in polishing of stainless steel strip or the like. This cutting tool consists of a shaft having a cutting blade means mounted at one end thereof. A traction wheel is provided in parallel relationship with the cutting means for engaging the surface of the rubber covered roll, and means are provided for mounting the traction wheel for rotation and parallel to the cutting blade means. Bracket means are provided for mounting said shaft to a lathe for movement therealong so that the cutting tool can be used to cut helix grooves in a rubber covered roll as desired.