I need to bend sheet metal in a box-like shape, but with one flap in the reverse direction as shown below:
Currently I only have a simple flat brake, however, I don't see how to do this, even if I had a $3000 pan and box brake with fingers.
The only way to do this that I can see is if I could somehow offset the platen from the apron and then put a die base on the platen inside the box, but as I understand it, normal pan brakes don't do that.
Best Answer
Unless you have a brake that has fingers or the clamping bar has removable plates you are still going to have a problem folding the third fold of the other three.
If you are able to do normal four sided box folds then for the reverse flap you would have the option to make a normal box and then attach a separate plate to one side to create the riser flap. This could be attached with welding, spot welding, rivets or sheet metal screws.