Abstract: A cathodic arc coating system includes alternating layers of at least one of titanium vanadium nitride (TiVN) and titanium silicon vanadium nitride (TiSiVN) disposed on a substrate; and alternating layers of titanium vanadium chromium nitride (TiVCrN) and titanium silicon vanadium nitride (TiSiVCrN) disposed on a substrate. A cathodic arc process includes a sub-hertz variable bias forming the alternating layers of alternating layers of at least one of titanium vanadium nitride (TiVN) and titanium silicon vanadium nitride (TiSiVN) disposed on a substrate; and alternating layers of titanium vanadium chromium nitride (TiVCrN) and titanium silicon vanadium nitride (TiSiVCrN) disposed on a substrate.

Abstract: A pipe cutting apparatus includes a semi-cylindrical support shell arranged to include a plurality of positioning flanges extending downwardly relative to the support shell to receive a pipe member therebetween. The positioning flanges include a saw guide slot diametrically directed through the semi-cylindrical support shell and medially of the positioning flanges to effect alignment and severing of an associated pipe. The elongate slot is of a predetermined length substantially equal to and at least the predetermined diameter of the support shell. Modifications of the invention include engaging flanges mounted in cooperation with the support shell to enhance manual grasping and engagement of the associated pipe. Further, securement straps are available to afford encompassing securement of a pipe contained within the support shell. A lubricant spray apparatus is available for use of lubrication of an associated saw during a cutting procedure.