There are many different ways to lay out this pattern.
How to make a cone out of sheet metal.
Cut out a circle of sheet metal using snips a jigsaw or bandsaw cutting torch a nibbler etc then cut a pie slice out of it.
Sheet metal cone calculator.
I used aluminum sheet coil but you could use paper or any flat material.
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.
The easiest way to make a cone is to start with a semicircle then overlap the straight edges until they form a cone shape.
Slice the circle to the middle.
Toss out the pie slice.
View the cone instructions below to learn how to manually layout the flat pattern for a truncated cone in single or multiple gore sections.
Draw a line onto your sheet metal the same length as you want the slanted edge of your cone to be.
If the metal is flexible just take the remaining sheet and bring the two straight edges together.
If you want to get more specific however you should start with a circle instead then cut a wedge out.
You can find cone calculators online.
You will now have a circle of sheet metal with a cut from one side to the center.
Cut a length of string with a loop at one end and the other end held at the pivot mark.
Here is one way to make a cone from flat stock.
The string should be the.
Drill a few holes through the overlapping rectangular shape.
Now you have a cone.
Once you know how to make a basic cone you can experiment with other materials such as plastic sheeting.
How to roll a metal cone.
It allows you to determine either the size of raw material needed or the number of gore sections to fit on your available material.
This is just one way and i find that is the easiest and quickest way.
Roll the cone template into a cone shape starting at the wide end working toward the pivot point end.