How To Bend Aluminum Sheet Into A Circle

Step 3 cut a large triangle about one quarter the size of the circle out of the aluminum foil by making two cuts that run from either side of the circle to the exact middle point of the circle.
How to bend aluminum sheet into a circle. Take a piece of metal pipe on a hard surface and roll it over the sheet metal strip as you work it circular by pulling up on it. 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. Then place the clamp bar back down on top of the aluminum crosswise. Then use your bend allowance to draw your second bend line the intervening distance between your bend lines bend radius.
Make sure the bar is seated firmly inside the frame. To do this the extruded section is wrapped around a die. Some over bending is usually needed because the extrusion will exhibit a degree of spring back. Methods of bending aluminum extrusion unlike bending metal sheet on a press brake when bending extrusion the goal is to create curvature.
The five most common methods of bending extrusion are. Use scissors to cut the foil into a large circle shape. Insert your aluminum sheet into the brake beneath the removable clamp bar. Lift the clamp bar away from the rear of the brake frame and slide the sheet in perpendicularly to the direction you want to bend it.
Be careful not to bend or damage the aluminum foil in the process.