13-11-2022, 11:43 AM
I remember being impressed by Ian's techniques in his bulkhead pressing, excellent guide there. I'd also think about buying a set of dimple dies, usually available on ebay, very useful for strengthening/lightening holes in ribs with flanged edges. I tend to use 1.5mm 1040 grade aluminium as 1060 can be a bit hard to form and annealing evenly can be tricky particularly on stressed members.