When setting a fence post directly into soil, use a length of iron piping of 25 mm 1 in diameter to make a series of holes to a depth of about 450mm 18in. Hammer the pipe down into the soil to force earth into it. Clearing the earth from the pipe each time by hitting the side of the pipe sharply with a hammer or pushing a strip of moulding-through the pipe.
If a post is being set in concrete. However, dig the hole with a spade. Making sure that it is large enough to contain sufficient concrete to hold the post securely. Start by digging out a circle of over 300mm 12in diameter and then dig down at an angle to the required depth. Spread a layer of concrete in the bottom of the hole. With the aid of a helper. Stand the post in position, checking the vertical with a spirit level. Shovel concrete around the post. Pressing the mix well down and shaping it at ground level so that rainwater will drain away from the post. Allow the concrete to dry for six hours and then fil1 in the remainder of the hole.
In both cases, always coat the post with preservative before fitting it.