The slack between the wipe die and the punch plays an important role in getting a good result.
How to bend sheet metal around a barrel.
Sorry about that bad image it was hard to find a decent example.
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.
I thought about it but couldn t come up with a solution with a lofted bend.
The picture below isn t much better but gives a better perspective to what i m trying to recreate.
The inside bend radius should be equal to the thickness of the material that you re forming.
If you re bending 0 020 thick material use a 0 020 radius.
In principle does not seem that this operation is complicated and difficult.
As a result the wipe die also determines the bend s inner radius.
Here s a good rule of thumb for most materials.
Monkeys spinning monkeys by kevin macleod.
Simple sheet metal bender using a hand roller clamps and plywood.
It is important to make sure that the sheet is properly pushed onto the wipe die.
Bend metal without expensive tools step 3.
Now that you know your bend allowance take your protractor and draw a clear line with your marker across the point at which you will bend your sheet metal.
Wipe bending or edge bending is another way to bend sheet metal edges.
To use this jig start at one end of your tube and choose which part of the jig might give you the nearest approximation and clamp everything down.
Bending metal clip from robert van de walle on vimeo.
The bending of sheet metal with a punch and an array mounted at a folder is quite natural and normal.