Although electric drill bit sharpeners can provide you with a perfect end result, there is no reason why sharpening drill bits manually cannot be contemplated. Over the years I have sharpened many steel and wood drill bits quite successfully on a bench grinder. If you have a fairly good eye for angles, you should not have too much of a problem.
Things to consider
A bench grinder fitted with a diamond-grinding wheel is the best tool for sharpening drill bits. It also makes a lot of sense to practise on old or broken bits before attempting the real thing.
Drill Right Angle
The bigger the drill bit, the easier the task becomes. With smaller bits it becomes trickier. A snapped bit is even more challenging as you have to start from scratch. A good starting point here is to flatten the break first before starting to shape the angles.
Displaying your largest bit, can give you a good guideline for sharpening other bits. You can even use this bit to practice the required motions on the edge of your workbench.
The most important aspect is that the cutting edges be at the same angle with the corners at the same level horizontally. Also, it is important to note that the shoulders are rounded and slope gently down, backwards from the cutting edges.
The Process
Most manual drill bit sharpening guidelines neglect to tell you on which side of the grinding wheel you are operating. For this exercise we are operating on the right hand side if the grinding wheel, which in my opinion is natural for a right-hander. If you are left handed, just reverse the order.
Stand slightly to the right of the grinding wheel, feet apart. Hold the drill about a quarter of the way along from the point, using the left thumb and forefinger. Rest these fingers on the grinder's tool rest. Use the right hand to hold the drill at its shank.
Hold the bit with the shank angled off to the right at about 60 degrees. Use the right hand to swing the shank of the drill out to the right. These are very slight movements. Remember to keep the left hand supported by the tool rest. As you move your right hand, use your left hand fingers to roll the drill anti-clockwise about a quarter-turn and simultaneously feed the drill forward against the grinding wheel.
Repeat this action as required, alternating between opposite cutting edges.
Special Price!!! Milwaukee 49-22-8510 Right Angle Drill Attachment Kit
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Milwaukee 49-22-8510 Right Angle Drill Attachment Kit Feature
- 1/4-inch hex right-angle drill/driver attachment; accepts standard 1/4-inch hex shank bits
- For cordless 2.4- to 18-volt drills; up to 235-inch-pounds of torque; allows work in tight spots
- Durable all-metal housing and steel gears
- Includes attachment, 5 bits
- Only 2 inches wide for working in tight spots; 5-year warranty
Milwaukee 49-22-8510 Right Angle Drill Attachment Kit Overview
Milwaukee's Right Angle Attachment allows contractors to drive screws and drill holes in tight, difficult work areas. This attachment is ideal for cordless drills and uses standard 1/4- inch hex accessories. It has a durable all-metal housing and steel gears with ball bearing construction which allows this adapter to handle up to 235 in.-lbs. of torque. The compact design measures only 2 inches wide allowing it to fit in tight spaces where work is difficult to perform. The convenient quick change chuck accepts standard 1/4-inch hex drive accessories.Milwaukee 49-22-8510 Right Angle Drill Attachment Kit Specifications
Drilling holes and installing screws or bolts in an area too small for a conventional drill/driver can exhaust the patience of the most experienced contractor. When you get tired of using a stubby screwdriver you can either shell out the big bucks for a right angle drill or you can save your money and purchase Milwaukee’s right angle attachment. Milwaukee Tools, one of the most respected names in the tool industry, manufactures a 1/4-inch hex right angle attachment that is ideal for cordless drills up to and including the more powerful 18-volt models. The tool’s quick-change magnetic chuck accepts standard 1/4-inch hex drive accessories and the durable metal housing utilizes steel gears and ball bearing construction that gives the user a full 235-inch-pounds of torque. More than enough torque for driving screws or for drilling smaller holes. At only 2 inches wide, the tool will fit in very small and compact areas. Includes 5 bits and Milwaukee’s famous 5-year warranty. -- C. Dwight BarnettSAVE NOW on the special offers below!
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