How to install rails and plinths for a paling fence

The plinth needs to be mounted in the centre of the post. To do this measure from the outside edge of one post to the inside edge of the furthest post your length of wood can reach. Mark this length on the plinth with a pencil and set square.

Place the plinth on the ground in front of the fence posts. Use the spirit level to check that it's sitting level. Once the plinth is level, use the nail gun to secure to the post. Check the plinth is level before you nail it to each post. 

Measure the distance from the end of the first plinth to the wall. Transfer that distance onto the plinth.

Secure the second plinth to the saw horses with clamps. Use the circular saw to cut it to size.

Lay the second plinth near the posts where it will be attached. Use the spirit level to make sure it's level. Once it is, use the nail gun to secure it to the post. Check the plinth is level before you nail it to each post.

Place a fence post on the plinth against the post. Mark its height on the post. Measure down from that mark and draw a line across with the set square. This will ensure that you don't see the top of the post from the outside of the fence.

A fall needs to be cut on the top of the fence posts so that rain runs off them. Use the set square and pencil to mark the height of the fence posts on the side of the post. Draw another line 40mm below it. Use the set square to run a diagonal line from the corner of the top line to the opposite corner. This is the fall line. 

Use the circular saw and hand saw to cut the diagonal line on the post. Repeat steps 8 and 9 to cut the fall on all of the posts.

Mark with a set square where the top railing will go on the fence post. Draw another line 70mm below that, this is the width of the railing.  Mark with a set square where the bottom railing will go on the fence post. Draw another line 70mm up from that line. Determine the centre point between the top and bottom rails. This is where the middle rail will go. Repeat this process on all of the fence posts.

Get someone to help you slot the rails into the notches. Use the nail gun to nail the rail to the post. 

To nail the next rail into a notch, you will need to cut the previous rail. Use the circular saw to cut at the point where it sits in the middle of the notch. This will give you the space for the next rail to be attached.