THE CUBIC PRESS HAS MANUFACTURED THREE-DIMENSIONAL SHAPED CUTTERS FOR SEVERAL DRILLING APPLICATIONS. TRANSITION LAYERING OF COMPOSITE MATERIAL BETWEEN THE DIAMOND TABLE AND CARBIDE INHIBIT SPALLING, CRACKING, AND MICROCHIPPAGE, RESULTING IN A MORE IMPACT RESISTANT CUTTER. LABORATORY AND FIELD TEST RESULTS OF VARIOUS SHAPED SHEAR BIT CUTTERS AND PERCUSSIVE BIT INSERTS ARE PRESENTED.
