You can find cone calculators online.
How to build a cone out of sheet metal.
Draw a circle on the sheet metal with a pencil compass.
Here is one way to make a cone from flat stock.
I used aluminum sheet coil but you could use paper or any flat material.
Wear gloves for this since the edges of the metal can.
How to bend a cone from sheet metal.
Cut a length of string with a loop at one end and the other end held at the pivot mark.
Drill a few holes through the overlapping rectangular shape.
Mark one end of the line pivot and.
The string should be the.
How to roll a metal cone.
Roll the cone template into a cone shape starting at the wide end working toward the pivot point end.
Cut this circle out with your sheet metal shears.
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.