Holding a drill so the bubble is centered will make a plumb (perfectly vertical) hole, but if the material you're drilling into isn't level (perfectly horizontal), the hole won't be perpendicular to the material.

Suitable for drilling holes between 45 and 90 degrees, the guide has a built-in angle readout in the base for added accuracy. If you’re looking for a drill guide that allows you to move around from one workstation to another, then this portable Milescraft pick is the perfect tool for you. It comes as a complete kit with threaded steel bushings that make your drilling tasks both easier and precise. But most drill bodies are fairly straight and flat, or at least close enough that you can make slight adjustments to the drill's position as needed. Our team has put together the factors which will help you choose the right drill guide to include in your tool kit.Drilling block: Drill a series of holes through a strip or block of 1-inch-thick wood (preferably hardwood for durability), using a drill press or a drill stand. This consists of a flat metal base, two upright rods and a mounting device that holds the drill securely and slides up and down on the rods. Dave as you said percusion is not the issue here it is about using the drill without hammer and the cutting ability of the bit along with lots of water, slowly slowly catchy monkey, I think.

However, the advantage of having a drill guide is that it aids with both horizontal and vertical drilling. The drill guides make drilling fast, preventing us from making unnecessary, repetitive measurements. The adjustable angle of the guide ranges from 0° to 60°, providing ample flexibility to meet any drilling need.The Big Gator V-drill guide is designed for people who want an easy-to-use drill guide but with a wide variety of hole sizes.