Hone This

[Tom Jensen]

I've lapped a lot of lens parts and usually used a surface plate on emory clothe with oil or lapping compund if I remember correctly. It might have just been oil, I forget. I've found that lapping in a figure eight pattern helped even the wear as did flipping the rings over every so often. Then measure with a micrometer. Are piston rings as critical?
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Sex is like pizza. When it's good it's great and when it's bad, it's still pretty good.