วันอาทิตย์ที่ 6 มีนาคม พ.ศ. 2554

Sharpening hand drill

Sharpening hand drill

Sharpening hand drill

Posted: 06 Mar 2011 02:40 PM PST

Although the grinder electric drill you can do is a perfect ending is no reason not to sharpen drills manually can be taken into account. Over the years I have matured in many steel and wood drill successfully on a bench grinder. If you have a good eye for angles, it should not be too much of a problem.

Things to consider
A grinder with a diamond grinding wheel is the best tool for sharpening drillBit. It 'also very old or broken to pieces before the real thing in practice.

The larger the drill, the easier the task. For the little bit, it becomes more difficult. A little 'fire even more difficult than you have to start from scratch. A good starting point is the first stop, before you flatten the angular shape.

Displaying your larger bit, can give you a good guideline for the grinding of other bits. You can also this bitPractice the movements required at the edge of the workbench.

The most important aspect is that the edges of the horizontal cut at the same angle with the angles at the same level they are. It is also important to note that the shoulders are rounded and gently towards the rear of the cutting edges.

The process of
Most of the guidelines manual drill sharpening ignore the operating system will tell you which side of the wheel you are. For this exercise we operateon the right side when the grinding wheel, which in my opinion, a right of way. If you are left-handed, only in reverse order.

Stand slightly to the right of the wheel, feet apart. Hold the drill about a quarter of the length of the point with the left thumb and index finger. Rest these fingers on the palm rest of the mill. Keeping up with the right hand on the drill bit on its axis.

Hold the bit with the stock at a right angle to about 60 degrees. Use thethe right hand to swing the rod tip to the right. These movements are very slight. Do not forget to keep the left hand supported by the palm rest. As you move your right hand, the fingers of his left hand to roll the drill a quarter turn clockwise and simultaneously feed the tip forward against the wheel.

Repeat this procedure as required alternately in opposite edges.

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