To begin with, on the material, the center of the hole should be outlined, it should be marked with a chalk or pencil, after which a deepening is performed with a core, sufficient so that the drill could not slip.
The workpiece should be well fixed, for this you can apply a vice. For small parts, a different method is used – the sandpaper on which the workpiece is placed on the substrate, this will not allow the parts to rotate.
In order to perform a through hole, you need to apply a substrate – boards or bars, so that at the output, the drill could not damage the surface. This option is also applicable for the formation of a large number of holes, which should be performed with high accuracy.
In a tree, you need to drill holes at small speeds, this is how you will encounter a fewer chips, as well as the likelihood of the split of the board will be minimal. When performing a hole of a large diameter, a small hole should first be made 2-3 times smaller. So that chips do not form at the output of the drill, different methods can be applied. The first is to apply the substrate, the drill, leaving the array, will fall into the substrate. Another method is concluded in the drilling itself, on the back of the drill entrance, a small hole should be performed.