To find out how two new drill bits, both designed with self-feeding features that essentially pull the bit through the hole as it spins, stack up against a standard, old-fashioned spade bit, we ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you plan on drilling into brick, concrete, or stone, you’re going to need to use a masonry drill bit.

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If you plan on drilling into brick, concrete, or stone, you’re going to need to use a masonry drill bit. These specialty bits have strong carbide tips for boring through hard materials, and wide ...

The world’s largest boring machine was lifted out of an underground tunnel in Seattle, where it has been stuck for more than a year after it broke down mid-job. The gigantic drill, known as Bertha, ...

Boring, also called internal turning, is used to increase the inside diameter of a hole. The original hole is made with a drill, or it may be a cored hole in a casting. Boring achieves three things: ...