Sawing Band sawing is versatile for straight, continuous curves or irregular cuts. Saw blades should be selected based upon material thickness and surface finish desired. Machining Tips Rip and combination blades with a 0 tooth rake and 3 to 10 tooth set are best for general sawing in order to reduce frictional heat. Tungsten carbide blades wear well and provide optimize surface finishes. However, for optimum surface finishes and close tolerances, non-aromatic, water soluble coolants are suggested.
Spray mists and pressurized air are very effective means of cooling the cutting interface.
In addition to minimizing localized part heat- up, coolants prolong tool life. Nominal Hole Dia. Incorrectly sharpened drill 2. Insufficient clearance 3. Feed too heavy Burnt or melted surface 1.