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I just the a lower thread about Lapping stones. I would appear that the DMT is the way to go. I can still use wet/dry sandpaper to smooth it out. The flattening stone does work at removing the...

I just bought a Norton 4K/8K combo stone and a Norton Flattening stone. I noticed that after using it on the 4k side there are fairly deep scratches in it as well as the 8k side. I was flipping the...