Diamond core drills are primarily rented by mechanical and utility contractors, plumbers and stone masons for drilling holes in walls, ceilings, floors and roads. They can be a small but important ...

When plumbers and electricians need to drill a large hole in framing lumber or other material—to make way for pipes and wiring—they usually opt for a self-feed bit (above). Such bits max out at a ...

Next time you’re renovating and need to run some cables around corners in you walls, save yourself some frustration by building [izzy swan]’s corner drilling rig. It’s something akin to a custom ...

granite. However, granite with holes in it has been found in ruins of ancient Egypt, and how the ancient Egyptians, whose science and technology were less developed than today, were able to drill ...