This is because the metal is simply being bent on one plane.
How to roll sheet metal edge.
Figure 1 1 shows that the length of the edge before the roll a is the same as the outermost area of the roll b and as the inner most part of the roll c.
You can create the perfect uniform radius with these bevel heads.
Using a plastic mallet or planishing hammer hammer down on the fold until it s bent over in a u shape.
I ve started by bending the sheet up 90 degrees where i want to roll to start.
Bending your sheet metal with a vise 1 place your forms in your vise.
In the photos you can see that we start by folding the sheet metal over a sharp edge such as the edge of an anvil or sander stand.
Next we clamp our tool in a vice and hook the folded sheet metal over the tool.
The benefits of working with beveltools.
Using simple hand tools to make a rolled wire edge to a piece of sheet steel.
Watch this video and more in the solid edge sheet metal tutorials playlist.
Rounding metal with the bevel heads from beveltools ensure a smooth and consistent rounded edge on sheet plate pipe and hole.