Two basic operations — folding and bending — transform flat sheet-metal into a shaped object. With sheet metal of 24-gauge or lighter, you can form the curves of metal... moreTwo basic operations — folding and bending — transform flat sheet-metal into a shaped object. With sheet metal of 24-gauge or lighter, you can form the curves of metal cylinders and the sharply-folded corners of boxes by hand.Before you can form final shapes, you must fold the hems and seams indicated by the pattern to reinforce and bind the cut edges of the flat metal sheet and to make them less hazardous. You can form these folds with a hand seamer while the sheet is After flat edges for the rims of cylindrical objects before shaping the sheet metal. On more complex sheet-metal shapes, such as boxes, cones, and tapers, add the wired edge after you complete the shaping and seaming operations. When forming a box, make sure to form on the flat sheet the open folds where the wire will be fitted.For folded and grooved seams, use a hand seamer to make open-edged folds, called seam locks, before you shape the flat sheet. Leave clearance under the folds so that the layers of metal slip together easily... less
Two basic operations — folding and bending — transform flat sheet-metal into a shaped object. With sheet metal of 24-gauge or lighter, you can form the curves of metal... moreTwo basic operations — folding and bending — transform flat sheet-metal into a shaped object. With sheet metal of 24-gauge or lighter, you can form the curves of metal cylinders and the sharply-folded corners of boxes by hand.Before you can form final shapes, you must fold the hems and seams indicated by the pattern to reinforce and bind the cut edges of the flat metal sheet and to make them less hazardous. You can form these folds with a hand seamer while the sheet is After flat edges for the rims of cylindrical objects before shaping the sheet metal. On more complex sheet-metal shapes, such as boxes, cones, and tapers, add the wired edge after you complete the shaping and seaming operations. When forming a box, make sure to form on the flat sheet the open folds where the wire will be fitted.For folded and grooved seams, use a hand seamer to make open-edged folds, called seam locks, before you shape the flat sheet. Leave clearance under the folds so that the layers of metal slip together easily... less