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Remembering when I grid-lapped mine, I think I spent less than 3 minutes on each, they were really flat right out of the box.


OP, you have a cheap dull razor, I'd say you should jump in and...

Ah, then I wouldn't worry at all really.
Even if you don't plan to use them yet, you could lap them now anyway.
Mine came very flat, so they didn't need much lapping at all, but you need to get...

My 16k isn't like that at all. Did you lap the stone before using them?