DrillingAlthough there are many kinds of twist-drill bits, there are two basic types used in everyday metal drilling: high-speed steel (HSS) and carbon steel. HSS bits are preferable because they last longer than carbon steel types. A split-point cobalt steel bit is used for drilling stainless steel and other extremely tough metals (Photo 7). The bit’s split point reduces the tendency of a spinning bit to rotate away from the point at which you want to drill—a phenomenon known as walking. The split point also causes the bit to penetrate the metal more quickly and with less force than is needed with other bits. In many cases, using a split point eliminates the need to mark the hole with a centerpunch.
IINM a pilot point bit and a split point bit are different designs that are intended to accomplish the same result (prevent "walking" as previously explained).
It contains the recommended speeds and shows all the various types of Drill Bits that are available.
The Original file was downloaded from Wood Magazine as a "freebie". I just finished going over the Wood Mag's web site and could not find the original file.
Hope you find it useful.
Stop thinking why you can't and Start thinking how you CAN!
Remember, SUCCESS comes in CANS!
George
If I'm not mistaken, that means, "If I'm Not Mistaken."
FWIW, IMHO, that should have been:
IIRC, it means "If I'm Not Mistaken."
YMMV, HTH
Ray
"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects."
--- Robert A. Heinlein
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