You stack the curls and weld them, then you split the curls with a blunt hot chisel, then you weld the billet back together again along the split. The splitting with a blunt chisel drags down the grain of the metal to give the pattern its form.
When the split has been welded back together you split it through its width and then weld in the core as a V, which gives it a point and edges, but provides pamor depth through the centre.
Nearly everybody with a keris interest has no knowledge of forge work Rasdan, let alone pattern welding. But we all do need a little of this knowledge, because without it we cannot really read pamor. If all we see is the result, its a bit like seeing a car run down the road at 100 miles an hour, but having no understanding of how it does that.
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