The state-of-the-art boring machine will dig the largest single-bore transit tunnel in the world, nearly 54 feet in diameter. It's capable of digging 30 to 40 feet a day, according to VTA. "There's no ...

The Barnes Bore Honing & Finishing Systems HH line of horizontal spindle bore-honing machines sport rigid structural box beam base designs, combined with easy access open-face configurations, that ...

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: ...