06-21-2017, 08:55 AM
Those Cubitron II grains are definitely nicely shaped little triangles, but in that picture at least they sure don't look very oriented. I was hoping to see them all standing on edge like little soldiers. 
I was searching around and found this somewhat uninformative sentence from 3M. From my point of view it doesn't really describe the difference very well:
"The precision-shaped grain found in 3M™ Cubitron™ II Abrasives combines the advanced material properties of our original Cubitron grain with the precise microreplicated structures pioneered in 3M™ Trizact™ Abrasives. As the triangular shaped grain wears, it continuously fractures to form sharp points and edges."
I was searching around and found this somewhat uninformative sentence from 3M. From my point of view it doesn't really describe the difference very well:
"The precision-shaped grain found in 3M™ Cubitron™ II Abrasives combines the advanced material properties of our original Cubitron grain with the precise microreplicated structures pioneered in 3M™ Trizact™ Abrasives. As the triangular shaped grain wears, it continuously fractures to form sharp points and edges."