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Order cylinder hone online
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Replace stones with 80 grit sandpaper.
Look at homemade turning tool
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Research industry solutions
Ask around about any bigger lathes on campus
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Max Height: 8 feetz
Big Cylinder:
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https://www.keyence.com/ss/products/measure-sys/gd-and-t/type/run-out-tolerance.jsp
https://www.gdandtbasics.com/circularity/
Information:
Runout tolerance = Axis offset + Total circularity
(a.k.a. how much it wobbles and how far from a perfect circle it is)
Proposed solution online: Straight surface + diameter gauge?