Drilling in rock-bit type?

SDS drill is the way to go. They turn slowly, but hit much harder than an a conventional old-style hammer drill. The difference is almost unbelievable the first time you use one.

For 5/16 holes, any SDS drill will be fine. If you drill bricks, going for an overpowered SDS drill will tend to cause problems with knocking the back out of the brick when part-way through: a problem with brick-built houses here in the UK, but maybe less of a problem if that's not a construction method you encounter. I find anything over about 2J of impact energy is too much for brick, but for drilling bigger holes in concrete, more impact energy is good.

The cheapest import SDS will drill stone/brick/concrete much better than even the most expensive combi drill, so if you are not going to use it much, buy a cheap corded one under 2J.

Link to JCDRILL

How to drill a perfect hole in natural stone

Among the many questions we are often asked, one of those is how to drill a perfect hole in natural stone, for example if you need to put up a shelf or picture on a wall clad in stone tiles.

For more electric rock drillinformation, please contact us. We will provide professional answers.

There is no need to be stressed, because although it is exceptionally hardwearing, sculptors and craftspeople have managed to create complex and immortal works of art from it for centuries, often armed with only the simplest of tools such as a chisel or rasp. That said, it is a precious material and does require a little attention so that you avoid unsightly scratches or chips.

We have put together a series of practical tips designed to guide you through the process of drilling a hole in marble or other natural stones without causing damage either to yourself or the stone. On that note, we would also strongly suggest that you always wear protective gloves, a mask and safety goggles to reduce any risk of injury.

If you want to learn more, please visit our website cable tool water well drilling.