Making Duct Out Of Sheet Metal

Snip all four corners of the duct on both ends for a distance of 1 inch and bend back the metal slightly to form flanges.

Making duct out of sheet metal.

Galvanized mesh panels for making air ducts and accessories should be bite joined or riveted. Place a 4 foot by 8 foot piece of sheet metal on the work table. The width of the sheet 4 feet will be the. And because it is a better insulator there is less sound produced within the pipe.

Nevertheless we were able to make all kinds of rectangular and round ducts and all types of fittings. In addition the use of various hand tools and power tools required in sheet metal layout and fabrication is provided. You can model a part like this in solid edge sheet metal and flatten it. How to make hvac ducts step 1.

Flange butt welding should adopt gas welding. How to make the double seam lock. In 1986 i use to work at the sheet metal shop where we made all the ducts and fittings almost exclusively by hands. Lay the steel ruler on the metal parallel to the edge of the long side.

δ 1 2mm should be welded. Cut along the lines you drew using tin snips to produce a length of duct with ends that angle in opposite directions. This chapter describes some of the methods of measuring marking cutting forming and joining as well as installing sheet metal sections duct systems and fiber glass ducts. It is normally used in the fabrication and joining of the round pipe or in joining or piecing together two sheets of metal to form a large wrap around section for square or rectangular ductwork.

A sheet metal transition is generally a piece of duct work that changes in cross section from one shape to another typically from a rectangle to a circle. The thickness of the steel plate for making air ducts and accessories δ 1 2mm can be connected by bite. Using a yardstick and a marker mark the edge of the sheet at the points of each of the three panel grooves per your calculations. Steel plate duct bite joint.

Position it about 10 inches to 12 inches. Align the end of the. Sure you can insulate a sheet metal duct but why not buy a pipe where that is not necessary. Yes we had a hydraulic guillotine shear sheet metal brakes slip roll machine hand tools and this about it.