What are seaming pliers?
Seaming pliers are a hand tool used to grip and bend or fold small sections of hard but pliable material, especially lead, but also aluminium, copper and zinc.
Seaming pliers are also known as lead seaming pliers, hand seamers, clinching pliers and hemmers.
Seaming pliers are used mainly for roofing work, where they form a seam to join panels of sheet metal together, to cover a roof.
Seaming pliers are also used to create a decorative finish or ornamental ridge to the seam on the sheet metal.
Seaming pliers clinch the edges of metal to form a seal.
Sheet metal is any metal that has been made into thin, flat pieces of between 0.15mm (0.01 inches) and 6.35mm (0.25 inches) thick. It can then be cut and/or bent into a variety of shapes.
Clinching sheet metal
Clinching metal with seaming pliers involves joining together separate pieces of sheet metal, either by bending over any protruding parts, or securing them by forming an edge.
Forming a seam
When an individual piece of metal is formed the edges are bent over and shaped to form a smooth seam.
People who work with lead, especially roofers and plumbers, use seaming pliers on a regular, even daily, basis.
Seaming pliers are an essential part of their tool kit.