Different grit on each side of edge?

M

Mephtyrm

Joined
Jan 23, 2011
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245
Well, I was experimenting on a Spyderco Centofante 3 and decided to put a 325 grit diamond finish on one side, and 1200 grit diamond on the other.
On the alternating strokes to get off the burr, I put one stroke on each side with it's respective grit, stropped it on an old leather belt loaded with
aluminum oxide sharpening stone particles, and the resulting edge cut weird. It had some of the bite of the 325, but when push cutting materials, it would
go through like the 1200(Talking about cutting corrugated cardboard).

Could someone go over the pros and cons of using two grits? It really interests me.
 
I gave this a try on a few knives and found the edge just didn't seem to last very long tho it did have a nice combination of characteristics. I'm interested to hear your impressions after using and maintaining for a while. Ultimately I decided I got better results using the same grit both sides* and its easier to maintain - I was using two strops as well as two stone grits.

Edit to add:
*An edge done to approx 600-800 gives nearly the same characteristics yet is for the most part easier to achieve and maintain. Still interested in how it plays out for you.
 
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Yes, I found it cut well but didn't last so long as if the blade was sharpened all on the same grit type. Yet, I was using similar size grit but different types. 320 AO and 325 diamond, the two edge bevels looked very similar. DM
 
Hmmm, interesting. Never thought of that, Does it create a sort of micro serration? I wonder if it would also make a difference to have asymmetric honing angles, think micro chisel grind with coarse grit on bevel side.
 
Micro serrations-- maybe. It cut well and was very sharp. Different angles, I didn't do- just tried to keep the edge angle the same. DM
 
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