How To Make A Funnel Shape Out Of Sheet Metal

You can get three guards out of a 3x8 foot piece of metal see drawing below from zeleny s book then cut out circles.

How to make a funnel shape out of sheet metal.

Cut out the cone template from your sheet metal using tin snips and file the edges smooth of any burrs of rough sections with your file. For a medium funnel use half a sheet of printer paper. Drill a few holes through the overlapping rectangular shape. Form into an elongated cone so that the opening at the thin end is about inch in diameter.

Cut a 3 foot square piece of 24 or 26 gauge galvanized sheet metal. Here is one way to make a cone from flat stock. Roll the cone template into a cone shape starting at the wide end working toward the pivot point end. The cone has a diameter at the top smaller than the diameter at the bottom and to accurately trace the shape onto sheet metal you need to make a template out of construction paper.

Making the funnel neck step 1 draw a wedge shape on the sheet metal making it 4 inches wide at the top and 2 inches wide at the bottom and 6 inches in length. You can find cone calculators online. I used aluminum sheet coil but you could use paper or any flat material. For small funnels fold a sheet of printer paper twice so you end up with four rectangles and cut those apart and use separately that s what i m using here.