I am cutting some spindle mounts for someone and although they will be happy with them I am trying to improve the cut quality.

This photo is of the bottom of the mount. The only difference between this edge and the others is that there was no material on the other side of the cutter. The cut was positioned close to the edge of the material so that I could get two parts out of it.
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The next photos show other edges of the cut which seem to show some vibration from the top down but it dissappears approximately half way down.




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ID:	8132Click image for larger version. 

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The material is aluminium 20mm thick, 12000rpm, 700mm/min 1.5mm DOC with a 0.2mm finish pass. 6mm single flute cutter.