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Maybe you were lucky. I know that of the few coti's I've owned not all would be suitable as a one hone solution whereas synthetics are a known factor.

Did I misinterpret the op when he said " Im buying vintage razors and making them shave ready will this work ? "
You would have to be very lucky/ experienced /knowlegeable/connected to get one...

Simple answer is no. You will need more than 2 stones to restore razors. Especially don't buy no name stones.
The minimalist, cheap, setup to do what you want IMHO, is the Shapton M5's in...