The sheetmetal is slid between the two bars and twisted back and forth to create a fold.
How to roll sheet metal at home.
Cut a length of string with a loop at one end and the other end held at the pivot mark.
Mark your bend lines.
Otherwise the sheet metal is almost certain to shift as you bend it resulting in a bad bend.
In this case the sheet of flat steel will be formed into a wheel disc.
However wider and thicker sheets can be formed some up to 5 ft.
Then use your bend allowance to draw your second bend line the intervening distance between your bend lines bend radius.
How to roll a metal cone.
Now that you know your bend allowance take your protractor and draw a clear line with your marker across the point at which you will bend your sheet metal.
The roll forming process is capable of producing parts with tolerances as tight as 0 005 inches.
Monkeys spinning monkeys by kevin macleod.
This video shows how to create and form your own sheet metal parts with limited tooling.
Draw a line onto your sheet metal the same length as you want the slanted edge of your cone to be.
Clamping your sheet metal to the straightedge is a must.
Wide and 0 25 inches thick.
In this video i show how to make a simple metal brake with a couple.
Simple sheet metal bender using a hand roller clamps and plywood.
To clamp efficiently lay your sheet metal on the top surface of your straightedge with the drawn line perfectly aligned with the outside edge of the sheet metal.