In other words if you re bending 1 8 sheet use a tool with a 1 8 radius to form the inside of the bend.
Bending aluminium sheet.
Purchase a metal bending brake online or at your local hardware store.
Say you re bending 0 25 in thick 6061 t6 aluminum to a 100 degree external angle 80 degree internal angle.
To calculate the expansion that will take place on the outside of your bend angle you will need to know your bend allowance.
Bending sheet aluminum with a bending brake 1.
To make this easier you d start with your 6061 material in the soft t 0 state.
If you re bending 0 020 thick material use a 0 020 radius.
Place the fracture line over the edge of a table and bend the overhang slightly downwards.
A bending brake is a specialized metalworking.
Insert your aluminum sheet into the brake beneath the removable clamp bar.
This weakens the aluminium and creates a fracture line.
The bending you will be doing will warp your sheet metal so that it is physically bigger.
With the aid of a straight edge and a sharp knife score both sides of the aluminium sheet.
Sheet aluminium can be cut without the need for a guillotine or tin snips which tend to deform the metal.
You d probably air bend by using a 3 0 in.
Flip the sheet over and repeat.