In these non-criminal contexts, the victim can sue the harasser in a private civil lawsuit, alleging that the harassment constitutes discrimination. On the other hand, criminal harassment is usually confined to state law. States vary in how they define criminal harassment. Generally, criminal harassment entails intentionally targeting someone else with behavior that is meant to alarm, annoy, torment or terrorize them.
Cobalt drill bits are most commonly used for drilling stainless steel and other metals. Diamond Drill Bits. Polycrystalline diamond (PCD) is one of the hardest tool materials. It actually consists of a layer of diamond particles bonded to a carbide support.
Larger bits tend to run about half as long due to a slightly different type of cutting action. Drilling in 1/4 glass, being twice as thick, will normally produce only half as many holes over a drill bit's life, if the glass hardness and drilling techniques are the same. Tempered glass has differing degrees of temper, and will reduce drill bit life by 75% to more than 90%, compared to standard glass.