to find coal and other gems
Most drills a re made from tool steel. Some better ones are made from alloy steels
Yes, rock drills are usually diamond tipped and are very expensive.
B&D drills are made in Mexico and China now.
black and decker is onw of them.
"Although it may not be made specifically with the small handed in mind, the general consensus is that Makita drills are ideal for smaller hands. Many with small hands use the Makita drills with ease."
Most hand drills are made of steel. Their drill bits are made of high sped steel.
drills, cutting tools
Abrasives and high speed drills are often made of carbide alloys of carbon and various metals.
Drills to the mantle are designed with specialized diamond-tipped drill bits due to the extreme heat and pressure found in the Earth's mantle. The drill bits are made of industrial-grade diamonds that can withstand the harsh conditions and effectively cut through the rock layers. Water or other coolants are used to help manage the heat generated during drilling.
NONE. All are now made in Taiwan,China, Phillipines or Mexico.
drills
SOME Power Drills are made that can do both but not all power drills will do this - you need to read the instructions for the drill.