Ah Mike, a man after my own heart. Very simple, no expensive tools needed, clamp it up an tap it down and the beauty of this method is that you can

I may be wrong but i think he want's a inspection hatch type hole say like over the foot peddles say 200mm x 300mm and a flat panel fitting in hammered the shape into the panel. It's best to go gently and take a few passes to get the folds fully formed or you risk ripping the metal. The Frost Joddler is a simple hand tool particularly useful for vehicle body and sheet metal repairs that involve joining two pieces of metal sheet together.I suppose you could make up a pair of jaws and weld them to a cheapo set of Mole grips? Personally I'd advise against getting one. be a useful tool to own, but not completely necessary as you can build up forms from multiple thin sheets of material. same to do, it's might be worth making up as tool. Try to ensure that the aluminium is clamped top and bottom so that the panel will not be

The Joggler jaws sets down a 12mm wide step along the panel edge in mild steel up to 1mm (18g). The long handles make it easy to use. This robust tool brings professional quality work to your fingertips with machine accuracy.How about cutting a hole in a piece of ply wood the shape you want then lay and clamp the alloy on i t.