With metal, you will

Pillars are dug into the ground to a depth of about a meter and concrete. If they are made of wood, take care of their smoothness and pre -treat the antiseptic. If metal pillars are selected, the sections must be thoroughly treated with a grinder. In addition, when working with metal, you will need a welding machine, and for wooden swing for the installation of elements, blanch bolts with nuts or screws.