[jack neville]

One of the plywood sheets was laid inside the metal blank and the shape traced out with appropriate allowance for the folds. That shape was then cut out of the metal blank x 4 and then the two plywood sheets were bolted together with the metal sheet sandwiched in between.
A few clamps were added to secure the edges. I only need these formers to survive long enough to make four panels so they don't need to be too elaborate although I need 30 mm folded over for the wheel arch in a circular pattern which needs a lot of slow tapping and is a significant stretch..