a)I am just wondering as to whether the synthetic material from stones do also eventually break down due to attrition . Are they more resistant?
b) It is also fr this reason that I use say a 3,000 grit stone to clean or create mud on say a 5,000 grit stone. Grit contamination does replicate the desired mixture.ON this subject, the texture of the mud becomes relevant.... too watery not much slurry around. Too dry, it cant do its job. A right amount of water ( droplets, via a spray) will have the right mix and texture.
Look forward to the above said confirmation.