How To Make A Funnel Shape Out Of Sheet Metal

For a medium funnel use half a sheet of printer paper.

How to make a funnel shape out of sheet metal. Cut a 3 foot square piece of 24 or 26 gauge galvanized sheet metal. Drill a few holes through the overlapping rectangular shape. Here is one way to make a cone from flat stock. You can find cone calculators online.

To make a large funnel use a standard sheet of printer paper. You can get three guards out of a 3x8 foot piece of metal see drawing below from zeleny s book then cut out circles. 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. 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.

I used aluminum sheet coil but you could use paper or any flat material. Once you have a rectangle of paper follow these steps. Form into an elongated cone so that the opening at the thin end is about inch in diameter. 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.