The first impression of Viel S-5-M

[SHARPCO]

PDP is the most aggressive compound on the market, and at high speed it will keep creating burr, as noted by Mr. Grepper.

CBN is better at removing burr, and plain boron carbide is even better.

It's a similar story in reverse. Boron carbide leaves the slickest edge, and PDP produces the most aggressive edge.

The only way to really take control is with variable, or at least, low speed.

Thank you Mark, 

Before the testing Viel, I thought 2700 SFM would not bad. But now I think that speed is too fast for honing. 

However, paper wheel applied with diamond paste can makes very sharp polished edge. It runs faster than 2700 SFM. Why can't I make this edge on the belt?