You will use the protractor to gauge the brake as you bend the metal little by little.
Easiest way to bend sheet metal.
How to bend sheet metal without a brake.
Mark your bend lines.
Cut the section of metal out or otherwise prepare the metal to be bent by removing any burrs or sharp edges.
How to bend sheet metal without a brake in 4 different methods with minimal or homemade tools.
If you can make it to the end without problem then just follow your own steps.
Then use your bend allowance to draw your second bend line the intervening distance between your bend lines bend radius.
Wipe bending or edge bending is another way to bend sheet metal edges.
The easiest way to do this is to just cut off a little strip of metal to use as a test piece.
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.
Every time you do a bend mark the spot with a number.
Either way there are a few shapes that just aren t very practical for most bending tools.
The slack between the wipe die and the punch plays an important role in getting a good result.
Determine the angle at which you want to brake the metal and mark it on the protractor.
Don t cut quite all the way through though that s.