I thought the edges of the reverse curve could do with a bit of a stretch so I used the classic lump of wood in a vice approach. Due to the malleability of the metal, only a gentle tap was needed to get the stretch to form.
To even out, stretch and smooth the inner section of the reverse curve, I decided to see how an English wheel would affect the material. I swapped out the bottom wheel for another with a higher crown, the highest crown available as this is a small piece of metal so I wanted a minimal contact patch. After only a few light passes through the English wheel, the central arc was widened, smoothed and slightly more aligned. I began to work on stretching and forming the metal using various metal anvil-like objects that were scattered around the workshop. Got up to this stage when I was informed that there was staff CNC training so I had to leave. Will hammer out the final parts another day.
ready, steady, shrink! ^check out the sneaky puckers forming an undulating edge to shrink and curl^ After having stretched the edges out, I wanted to get them to 'curl' back in. To do this, I needed to get some cheeky little puckers to form along the edges which would cause them to shrink, contract & curl in.
Bowl starting to take shape. Folds have been worked out with pliers. First time using the English wheel, I was working on zig zags along an x and y axis. I now see that I should have been working radially around the bowl.
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