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Tonight i took a large screw driver, soaked my DMT plate added a bit of washing up liquid to the mix and started dragging the shank of the screw driver up n down the DMT plate.
It worked a treat. ...

I think its a high spot as opposed to a rogue diamond.
I didnt realise it had created a rough patch in the middle of my Shapton 30k. I could feel it when honing but as im a bit of a novice i was...

Hi, i have a question ,as usual:banghead:
I use a DMT 325 plate for lapping my Shaptons and Jnat.
After using the DMT plate there are fine scratches on my stones that i take out with a Nagura....