Asked in Gems and Precious StonesConstruction Tools
Gems and Precious Stones
Why are diamonds good for making drill bits?
What brands of bits are compatible with a makita bdf452 18v lxt lithium drill and what are the essential bits?
First off, Makita tools are very good. A few bits should come with the drill. It sounds like any standard cordless drill bits would work. You want a main bit that you use primarily. That is about 2 inches long and is a #2 phillips head. Sometimes it has a flat head on the other end which is handy. You may want another two inch bit with a flat head. Buy a good one for a buck extra (Vermont American bit, etc...)so it won't get stripped quickly. You can buy lots of bits that are two inches long, but you want a bit set. It has a bunch of different smaller bits that fit into a 2 inch chank with a socket-type end. There is just a ton of different stuff that you can buy, and you can probably find lots of different kits that contain all of this. You can use drill bits that are made for cordless drills. A normal drill bit won't work. The base end of the bit is made to slide down/ fit into the drill. I have some of those drill bits, and I also have some that make a little divit into the wood so the screw-head fits in nice and snug. Mine are made at Ryobi, and I bought them at the Home Depot. You can buy replacement drill bits to fit into the base. That's pretty handy because you can break a lot of bits without replacing the whole thing.
Asked in Geology, Building and Carpentry
Can I drill holes into the rock?
Sure! You just need the proper bit and a hammerdrill and you're good to go. There's a lot of good bits at your local hardware to drill stone with, but most often you get what you pay for. For instance if moneys no object and you want to drill real fast, buy a diamond dust coated bit. Most of the ordinary cheapies work fairly good. You should lubricate the bit as you drill or it can overheat.
Asked in Mining
How is drilling in mines done?
Depends on the type of mine. For surface mining, we use a track drill. This is a mobile piece of equipment, mounted on tracks. A "top hole" drill uses drill steel (hardened steel rods) that are hammered into the rock, and rotate, crushing rock to powder, which is blown out by water or compressed air. Some drills use rotating bits that grind their way through the rock. Underground mining may use a "Jumbo", which has several drill bits mounted on one machine, or a "jack leg" drill- a hydraulic jack braces the drill against to roof and floor, and hammers a bit into the rock. In a few special mines, a thermal lance is used to burn holes into the rock. PS- good drilling= good blasting= good mining.
What materials are good thermal conductors?
Is drill baby drill an aphorism?
Yes, one definition of Aphorism is "a statement of principle" making "drill baby drill" used in the 2008 Republican Campaign an aphorism. An aphorism is an original thought, spoken or written in a laconic (concise) and memorable form. (Wiki) "Drill baby drill" is an oil field term stating the order of business in the oil industry, "drill first then ask questions later" is a good parallel expressing the 'Manifest Destiny" that oil companies lobby in Washington. It is easy then to see how it became a slogan during the 2008 Republican Campaign.
Asked in Chemistry, Mining, Diamonds
What is so good about diamonds?
What are the advantages and disadvantages of two culture?
How can you use Cordless Drill as a Bench Drill Machine?
You could buy a normal drill stand but i feel you will overload the drill and burn out the drill ;these use a lever harder to judge the pressure your putting on the drill better with corded drill. ANS 2 -There is absolutely no point in doing this as nowadays small bench top drill presses are cheaper than good cordless drills !