Sheet Metal Corner Relief Size
Generally capabilities of of 0 9mm 20mm in thickness are able to be manufactured from sheet 3mm or plate 3mm but this tolerance depends mainly on the part.
Sheet metal corner relief size. When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to rip and tear. In general a minimum bend relief is equal to the material thickness plus the inside bend radius. If you use the close 2 bend corner tool you can take the two corner types shown above and they will look like the closed corner shown below with the flat pattern to the right. This option is straight forward.
The way this one works is that you select the tool first found on the home tab sheet metal group. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.