Tips to grind drill

Drill Sanding is really an art in itself. It is not impossible for a layman but with great skill and stamina you can do it. One should consider first whether the time pays worthy the purchase.
Then there is a possibility of the locksmith around the corner to ask some help for little reward. Will you do it, or just asked him to. One can do it by hand or with something of a professional machine. In any case, choose the first attempt a couple of old, thick drill, since the first experiments go wrong and the thin usually disappear quickly.
With the hand you used one of a double-sanding block. Put the drill between the forefinger and thumb and pinch the desired tip angle to keep the sanding block. Drill Type N has an angle of 19 degrees to 40 degrees. Type H has 10 degrees to 19 degrees and Type W has 27 degrees to 45 degrees. The angle adjustment with the fingers must be accurate. With the other hand lead to the drill shaft and press it slightly against the sanding block. Again, keep a very close attention, not to change the angle.
Caution! Don’t use too much pressure against the grinding stone. This also has to make the first cutting ready. Then operate on the other side and then compare both results. This need a good eye, and time. If the sides are not identical, the drilling results could be not useful. It sounds simple, but requires much practice and skill. To those takes too long for it, he’d better buy in the shops a new drill grinder.
There are already designs for small home improvement, working with the same principle as the professional machines in large factories. How these devices work, is in the enclosed manual carefully explained or described in the Internet. In Youtube there are even some video tutorials. Simply, the keywords drag type drill.