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Star Lap And Sub Dia. Tools

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Posted by Rick Crockett on April 18, 2007 04:16:30 UTC


I would just use the sub diameter tool. A star lap is used to adjust the action in a specific area, usually for parabolizing. your 2/3 diameter tool will do the same. Vary the off center distance and length of stroke to achieve the action you need determined by testing. Using a star lap on a sub diameter tool is a quick way to produce bad zones. It can be done but you will probably find my way best. I only made star laps on full sized tools. Usually I would just experiment with a pattern that seemed right for an over center stroke. Hope this helps, -Rick

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