This was a fun study to do - I started with a clean slate, a very highly polished (.25um Diamond on Kangaroo Strops) edge and then created a micro-bevel with the 10k Chosera Stones with 10 edge leading strokes:




In this second image, you can see how smooth the surface is on the main bevel and at the shoulder of the micro-bevel.

The abrasives hit the edge and begin digging a trough, immediately creating micro-serrations and continuing the scratch all the way to the shoulder. Were the strokes done edge trailing, the same effect would occur in reverse, still resulting in micro-serrations. I'll repeat the study with edge trailing strokes soon.

Next I flattened and re-polished the bevels before repeating the same procedure with the 5k Chosera Stones:

Here is the 10k Chosera again with edge-trailing strokes, both edge and shoulder:

Looking like edge trailing leaves a cleaner edge?

cbwx34 wrote:


So far it looks that way, at least in the finer grits. I'll post pictures of the coarser grits soon.

Here are some shots of the edge after the 100# diamonds:






(Looking straight down on the edge)






(Looking straight down on the edge)

And here is the edge of a blade at 30 degrees per side stropped on kangaroo to .25um:

wickededge wrote:


I'm out of superlatives. Absolutely incredible.

Here are a few more -

First I cleaned up the edge again:



Then I did 10 edge-leading strokes with the 600# stones with very light pressure:



Next I cleaned up the edge again and then did 10 edge-trailing strokes with very light pressure:

Here is the 600# edge trailing blade looking straight down:

I don't see a clear winner at the 600 level...

Love the straight down view. Pretty cool how fine an edge you can get at that level.