Originally Posted by
onimaru55
There's no doubt about the speed of diamonds but if you use a 4k equivalent DMT I wouldn't use an 8k stone to follow as those 4k scratches will be about 1k deep. That is where I found the initial speed of diamonds had a speed bump. I know some of us use diamond plates for the heavy lifting on razors but my mileage varied :o
For those open to trying it, the Ha no Kuromaku Shapton 320 is chock full of SiC & whilst a bit slower than a diamond plate leaves a much gentler & very even scratch pattern. Use with a generous slurry.