How To Use A Drill
Certain drills are made to work best on a given type of material. Learn how to use a drill!
The proper use of equipment such as a drill can make any project much simpler and faster to complete. As with all power tools the use of the right kind of attachments can make a big difference in your work when it is complete. Certain drills are made to work best on a given type of material. For instance, a 3\8 inch portable drill will make holes in metal, ceramic, plastic, masonry, glass and other jobs as well. Heavy-duty works such as drilling through steel beams will take a 1\2 drill with a shoulder brace for successful completion. Remember when choosing a drill to use for your project that the size refers to the opening of the chuck, power and weight of the unit. Although drills with variable speeds and reverse drives are more expensive, they can cover a variety of projects, which makes them well worth the money. It is also very important to use the right bits with your drill for your project. If you are drilling a hole that is up to 1\2 inch in wood, metal or most plastics you will need a high speed steel twist bit. If the hole is larger than 1\2 inch you will need to use a spade bit, expansive bit or hole saw. When drilling into concrete, stone, or brick you will need a masonry bit with a carbide tip. You will also need a special carbide tipped bit to drill glass.
When you start to drill, be sure that the piece you are working on is securely clamped in a vise. Larger items like a door can be wedged in place but be sure you are drilling straight down or in an even horizontal position. Use a center punch to mark the center of the hole and position yourself so that the bit enters at the correct angle. Be sure once you are positioned that you can maintain a steady pressure on the drill. Begin by placing the bit against the center point and then slowly start drilling until the bit has penetrated before speeding up. When a precise angle is important use a drill guide. You can use a block of wood for your guide or purchase a commercial guide. When drilling metal stop from time to time and add a drop of light oil to the work. If you are drilling plastic or masonry you should keep a slow speed to prevent over heating. If you are drilling a notch use a strip of masking tape to wrap the bit at the depth where you need to stop drilling. Drill until you touch the top of the tape. To prevent wood from splintering where the bit comes out you can clamp a piece of scrap behind the piece and drill into it. Another way to prevent this problem is to stop drilling just as the bit breaks through the wood and drill from the other side to completely open the hole.
If you are working in an area where electricity is not available you can use a twist drill for lighter jobs. With heavier work you will need to use a brace and bit. Use high speed twist bits in this type of drill for the best results. But remember when doing this that a brace will require its own bits.