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Video: Engine-turned pottery on 1768 style potter's lathe
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<p>[QUOTE="moreotherstuff, post: 3935120, member: 56"]Absolutely fascinating. This video does a very good job showing how the lathe functions, rather than just showing a pattern being applied. Easy to see how the same principles apply to engine turning on metal.</p><p><br /></p><p>The one thing that I wonder about: wouldn't those cams require working with a very specific diameter of ceramic? A start point and end point on the ceramic would have to match a start point and end point on the cam. Any offset would result in the pattern self-erasing.</p><p><br /></p><p>I don't know if the same problem would exist in metal as metal could be shaped after a pattern was applied.</p><p><br /></p><p>I wonder if, when looking at lathe turned Wedgwood pieces, there is a very limited range of diameters, or varying diameters are proportional, e.g. 6", 3", 1-1/2", necessary to match a repeat point in the pattern on the cam. Otherwise, each different diameter would require its own specific set of cams.[/QUOTE]</p><p><br /></p>
[QUOTE="moreotherstuff, post: 3935120, member: 56"]Absolutely fascinating. This video does a very good job showing how the lathe functions, rather than just showing a pattern being applied. Easy to see how the same principles apply to engine turning on metal. The one thing that I wonder about: wouldn't those cams require working with a very specific diameter of ceramic? A start point and end point on the ceramic would have to match a start point and end point on the cam. Any offset would result in the pattern self-erasing. I don't know if the same problem would exist in metal as metal could be shaped after a pattern was applied. I wonder if, when looking at lathe turned Wedgwood pieces, there is a very limited range of diameters, or varying diameters are proportional, e.g. 6", 3", 1-1/2", necessary to match a repeat point in the pattern on the cam. Otherwise, each different diameter would require its own specific set of cams.[/QUOTE]
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