How To Seam Sheet Metal

You can see in the blue circle that the corner is not nice 4 create a new flange 3.

How to seam sheet metal.

1 make a planer 2mm 2 create a flange 1 manipulated in the sketch option so i have two bends 3 create a new flange 2 with a chain. An example of how to make a pittsburgh seam in sheet metal on a simple hand brake. When making a grooved seam on a cylinder you fit the piece over a stake and lock it with the hand groover fig. Standing seam consists of sheet metal roofing panels joined side by side and attached to the roofing deck with concealed fasteners.

Options all corner seams define how the faces meet along the seam distance and positions and how the bends are relieved in the flat pattern. The default settings for the sheet metal rule define the default values for the options. Also known as the circular lap seam the capped on seam is created by laying a flat round piece of metal over a smaller rounded piece such as the base of a cylinder. The overhang on the flat piece is folded over using a mallet.

Sweep the metal roofing sheets of all dirt and debris with a push broom. It consists of two folded edges that are locked together with a hand groover fig. The connecting point where the two separate metal panels meet forms a vertically pointed rib or a seam that is one inch to inch and a half high. 2 lay 6 inch wide butyl tape over all horizontally lapping end seams.

Apply corner seams manually or automatically while creating other features. Once the fold is made the seam is soldered. The grooved seam joint fig. Now that you know your bend allowance take your protractor and draw a clear line with your marker across the point at which you will bend your sheet metal.

The panels can be roll formed at the job site or at your local roofing materials supply warehouse. An example of how to make a pittsburgh seam in sheet metal on a simple hand brake. Then use your bend allowance to draw your second bend line the intervening distance between your bend lines bend radius. Mark your bend lines.