Sharpening

Supporting

Rest of workpiece

Protect the tool from damage

Dolly

Drift

Caulking tool

Fullering tool

To make good appearance

To prevent damage to the edges

To prevent over lapping at the seam

Maintain correct size and improve the strength

Tinned plate

Lead

Galvanised iron

Stainless sheet

Lead

Black iron

Aluminium

Copper sheet