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BTW, I will tell you one thing that is not "normal." You really don't need THAT many gridlines in order to identify flat. Really four or five lines going each way is quite sufficient.

However, I...

More likely 1200 grit. 1200k would be wicked fine!

Yes it's normal that a coticule can be that worn.

Now STOP LAPPING.

Your coticule does not need to be completely flat. Put that low spot on the opposite side of your honing hand and you will...