How To Seam Sheet Metal

Then use your bend allowance to draw your second bend line the intervening distance between your bend lines bend radius.

How to seam sheet metal.

An example of how to make a pittsburgh seam in sheet metal on a simple hand brake. Mark your bend lines. 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. 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.

Once the fold is made the seam is soldered. A typical standing seam panel can be approximately 12 16 and 19 inches wide. Standing seam consists of sheet metal roofing panels joined side by side and attached to the roofing deck with concealed fasteners. The grooved seam joint fig.

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

When making a grooved seam on a cylinder you fit the piece over a stake and lock it with the hand groover fig. 2 57 is one of the most widely used methods for joining light and medium gauge sheet metal. Apply corner seams manually or automatically while creating other features. It consists of two folded edges that are locked together with a hand groover fig.

The overhang on the flat piece is folded over using a mallet. 2 lay 6 inch wide butyl tape over all horizontally lapping end seams. An example of how to make a pittsburgh seam in sheet metal on a simple hand brake. Position the tape with the release backing on the top.