Abstract: A cutting element includes a layer of integrally bonded superabrasive particles disposed over a substrate. The layer has an outer circumference comprising at least one trough having a distinct cutting point on either side of the trough. A rock drilling drag bit incorporating the cutting element and a method of cutting a material using the cutting element are also disclosed.

Abstract: Methods for the harvesting of timber using a cutting sawhead having cutting elements of polycrystalline diamond (PCD) are provided. A sawhead having cutting elements of PCD extends the useful life of the blades, increases productivity and decreases downtown in timber harvesting methods. A method for harvesting timber in rocky and sandy soils using a sawhead with PCD tipped cutters is described. A cutting sawhead having cutting elements of PCD provide increased useful life compared to conventional steel and tungsten carbide cutting elements.