FOR SOFT FORMATIONS
Rock Cutter Blades are low-cost, replaceable blades for soft formations and are forged of
tough alloy steel. They are hardfaced on the cutting surfaces with tungsten carbide
particles of maximum hardness made to Blue Demon specifications. These
heat-treated blades are highly efficient in abrasive formations because of their self-sharpening
characteristics. This permits maximum drilling speed until the blade fingers are completely worn
away, without loss of gage. The fingers are designed to chip and peel out the formation
for fast penetration and speedy cuttings removal.
Premium Insert Blades
FOR MEDIUM FORMATIONS
Special high quality tungsten carbide inserts are used on the cutting surfaces of these
tough, forged alloy steel blades. These carbide inserts are manufactured
under rigid Blue Demon specifications for the maximum in toughness and
abrasion resistance. The inserts are bonded to the blades by a special
brazing process. A unique grinding procedure produces a superior cutting
edge for fast drilling. These Premium Insert Blades are designed for fast drilling
in medium hard formations and are equally efficient in softer formations.