1500/2200 Diamong Worth It?

I agree with Alan 100% if your only looking at the edge from a utility or practical point of view.  Yes 600 grit or 800 grit will yield all that is needed for a basically sharp cutting toothy edge when applied properly.

An edge sharpened to a finer grit will have a more precise and thinner apex and will be measurably sharper.  A simple analogy is a newly sharpened pencil and a pencil you’ve been using a bit.  They’ll both write but the newly sharpened pencil writes a thinner line.

The knife edge from a 1500/2200 grit sharpening will be thinner and sharper and shinier if done correctly.  IMO, it will cut and slice noticeably better.  A day to night improvement.  It may be more brittle and wear easier due to it’s thinness.  It’s a trade off.  Everything is.  For me the improved cutting and slicing edge from the finer grit stones make them well worth the investment and their use.  The finer grit sharpened, better cutting knife requires less effort and work for the same cutting chore then the practically sharpened knife with the 600 or 800 grit edge. That’s just my opinion.

Just to add, even with the 2200 grit very fine diamond stone, an edge leading stroke applied as a finishing stroke in your sharpening progression will apply a noticeably toothy finishing edge, all though very tiny, it does help.

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wickededge, Alan, NotSharpEnuff

Strops IMO will enhance any edge sharpness as a final step in your sharpening progression, for whatever stone grit you choose to end your sharpening with.  I’d get and use the strops first.  I’d start with the 4µ/2µ strop pair.  You’ll see a real enhancement to your sharpened edges with the strops.  Be aware the strops have a learning curve unto themselves, like all of the sharpening techniques.  Even with the 1500/2200 stones I’d finish off with the 4µ/2µ strops.

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wickededge, Brewbear, Organic, Alan

Do you think that?  This pictures before I got the 1500/ 2200/ and 3000 grit diamond stones!

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wickededge, Haffner, David, NotSharpEnuff, Brewbear, Alan, Organic

Marc H wrote:

Do you think that? This pictures before I got the 1500/ 2200/ and 3000 grit diamond stones!

MarcH that’s a good one!  I think you might need some help. 😉

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Brewbear, Marc H

I agree with the idea of kitchen knives only needing 800 grit, but I can’t help myself.  The 1000s, 2200s and 3000s are calling to me.  they’re calling … and… I … can’t … resist.  Oh, poop, there I did it again.  Well, at least it’s gonna be a sharp knife.

Funnin’ aside, I really do do this every time.  I did four kitchen knives today, and every one got 17 dps convex edges to 3000 grit and 6 micron film.

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wickededge, DaveG, Brewbear, Organic, David, NotSharpEnuff, Alan

I agree with dulledge.  You can, though, have a combination of a very fine sharp cutting edge with some very fine toothiness for slicing.  A balance.

Even 3000 grit stones used edge leading can leave a micro toothy edge.

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dulledge, wickededge, DaveG, Brewbear, NotSharpEnuff, Alan

rummels,  sharpening is a repetitive process fo me.  Grit after grit I repeat the same routine with the same technique again and again.  The culmination of the repeated steps yields my sharpened edge.  This you know.

I test the knife edge with each grit for sharpness.  First, as I believe I’m making progress I test the edge for sharpness with a simple finger feel.  When I think I’m making good progress working with that grit, I’m working with, I’ll pull a piece of newspaper, about 3″ tall down, over the sharpened edge to get a starting place feel, for sharpness.  As I continue to exercise my sharpening technique, still with the same grit, I’ll paper test again and again to feel the improvement in sharpness.

With the coarser grits the paper cuts requiring more applied force and with a more ragged cut.  With each finer grit there is a discernable improvement with how well and more easily the newspaper will pull cut down over the clamped knife edge.  By the second or third grits in my sharpening progression I can feel a marked improvement between my first paper cut test with that grit and subsequent paper cut tests as I continue to sharpen the knife with continue effort with that same grit.  At some point when I no longer feel any improvement, I step up to the next finer grit and repeat.

This method insures that I do more work then less, with each grit because I continue sharpening with each grit long enough to see if I can improve the edge further while still using the same grit.  Each finer grit the paper cuts easier and easier.  Cleaner and cleaner.  The improvement in how easily the paper cuts becomes quicker and more discernable till the edge is truly sharp.  At this point the paper cuts easily with each grit but the starting point and after spending time and effort with the finer grits there is a smaller perceivable difference in how easily the paper cuts.  At this point I am comparing how easily and smoothly the paper cuts at different positions along the knife edge.  Now I applying my efforts with the finer grits to refine the entire length of the knife edge so it’s the same every place I paper cut test.

With the finest grits the edge difference I see is strictly visual using the USB scope to inspect the polish.

I can feel a distinct difference in how well a knife performs between a 1000 grit properly finished edge and a 2200 grit finished edge when proper, time effort and technique has been applied to both.  The difference in feel and the performance between a 2200 grit edge and a 3000 grit edge will probably only be detectable with a BESS Tester.

Does that mean it’s unnecessary?  That’s up to you.  The extra effort to use the very fine grits beyond 1500 grit is negligible.  It takes me just about the same time to swap out the grits, set my stone stops then double check and make micro-angle adjustments if needed, then it may take to use these very fine grit stones.  The biggest improvement I see is edge refinement along the knife’s length and visual appearance.  For me if I spent the effort to get to that point a few more minutes is no big deal and worth the personal satisfaction.  At this point it’s that long asked old forum question, how sharp is sharp.

As a final thought I’d like to add, I think one of the single best changes a W.E. sharpener can make to their sharpening technique is to spend more time and attention to detail with each and every grit in their progression, before moving on.  I think we tend to move on too quick to the next grit before we get the most out of the grit we are using now.  That few minutes, extra time and effort,  grit after grit, will make a world of improvement to your final results.

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Tom, NotSharpEnuff, wickededge, Hogdog, rummels