How To Roll Sheet Metal Edges

Sheet metal hems are formed using very different methods though produces features with similar uses and functionality.

How to roll sheet metal edges.

For sheet metal support rolls are needed near the knives or files. Cut a slit on one end and use that slit to bend the edge over far enough to then dolly it to the final shape. I did something like this when i made burn barrels just skipped the slitting part. If you don t want to weld 1 2 round on the edge get yourself a piece of 5 8 or 3 4 rod about 8 or 10 inches long.

This is because the metal is simply being bent on one plane. It strengthens a piece where it s most vulnerable the edges and it protects the wearer from getting gouged or cut by their own armor. Rolling sheet metal serves two important functions for armoring. Curls are most often used to remove a sharp untreated edge and.

The smallest bending radius is equal to the upper roll diameter. Grinding uses driven side rolls see figure 4. After entering the type of material sheet thickness and bending radius the cnc machine sets itself to roll bending by adjusting the middle rolls downwards in relation to the two side rolls. Here i show you how to roll an edge on your armor.

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. The deeper these rolls are set the smaller the bending radius. Just do it in increments. It s a fairly simple process that adds strength to your armor as well as giving it a finished look and pr.

Curling sheet metal is the process of adding a hollow circular roll to the edge of the sheet. Curling is different than a tear drop hem because in a curl the edge finishes inside itself where a hem leaves the initial edge exposed. 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. You can create the perfect uniform radius with these bevel heads.

Stationary carbide knives or flat files for smoothing the edges are easy to incorporate into a low speed operation. Pinch rolls stabilize the sheet metal in the grinding zone. Rounding metal with the bevel heads from beveltools ensure a smooth and consistent rounded edge on sheet plate pipe and hole.