Magnetic lathe chuck spider provides reference face for repeat cuts.
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Another one for my 4 jaw chuck (material is 5083 aluminium 15mm thick & 3mm x 3mm neodymium magnets).
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The spider also helps with work-holding when turning small parts.
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knoba – Lathe chuck spider – 2015.dxf (link below)
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knoba – Lathe chuck spider – 2015.dxf
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knoba 