Lift the clamp bar away from the rear of.
Bending aluminium sheet.
You d probably air bend by using a 3 0 in.
With the aid of a straight edge and a sharp knife score both sides of the aluminium sheet.
Place the fracture line over the edge of a table and bend the overhang slightly downwards.
Say you re bending 0 25 in thick 6061 t6 aluminum to a 100 degree external angle 80 degree internal angle.
To make this easier you d start with your 6061 material in the soft t 0 state.
The bending you will be doing will warp your sheet metal so that it is physically bigger.
Bending sheet aluminum with a bending brake 1.
For most applications with stainless steel or aluminum you can get away with a zero radius bend on anything under 0 050 thick.
To calculate the expansion that will take place on the outside of your bend angle you will need to know your bend allowance.
This weakens the aluminium and creates a fracture line.
A bending brake is a specialized metalworking.
Purchase a metal bending brake online or at your local hardware store.
Flip the sheet over and repeat.
If you re bending 0 020 thick material use a 0 020 radius.
Die opening with a relieved profile.