Making A Cone From Sheet Metal

There are many reasons that you might need to bend a cone from sheet metal.

Making a cone from sheet metal.

Metal cones are good for finishing chimneys topping off certain types of outdoor fire and grill buildings and occasionally for decor purposes. I used aluminum sheet coil but you could use paper or any flat material. Building a cone out of sheet metal is a simple procedure. Once the size of the cone has been determined you can quickly and easily cut out the sheet metal before fastening it together using a rivet gun to permanently set it into a conical form.

Here is one way to make a cone from flat stock. But building a cone to exact sizes and specifications requires using mathematics. 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. Rolling a metal cone out of sheet metal may be a little easier than you may think.

You can find cone calculators online. This white paper is about cones of metal. By determining the length of the slanted side and the circumference at the wide end of your cone you can quickly and easily produce a cone exactly the size you want it to be out of a flat piece of sheet metal. It allows you to determine either the size of raw material needed or the number of gore sections to fit on your available material.

View the cone instructions below to learn how to manually layout the flat pattern for a truncated cone in single or multiple gore sections. If making a felt foam plastic or metal cone use hot glue instead. Sheet metal cone calculator. For example cones of carbon steel s235 s355 or stronger kinds of steel such as s460 and s690.

The curved steel cone calculator from chicago metal rolled products makes it easy to find the precise curved steel cone dimensions you need. The easiest way to make a cone is to start with a semicircle.