I know you're supposed to lap them when you first get them, but what about after that?
How Often Do You Lap Your Naniwa Super Stones?
- Thread starter raccoonandbrush
- Start date
For me, when I used the SS, I did it before or after each session. They require frequent lapping and it was easier to keep up with it.
Yep, I run the DMT over it before each razor.
+1, when I used to use them.
Yep every use
I lap the 1k, 5k & 12k every few razors depending on use. The 12k seems to need it less. The 8k gets it every time. It's very soft and never seems flat. They don't get as much use as the cotis and jnats now days.
Is this true with a coti too? How do you know when a stone needs to be lapped? Will there be any obvious signs or feedback?
When a hone is new, it should be lapped to be assure flatness. After that initial lapping, the lapping is all about keeping the abrasive "fresh" on the surface of the stone. Abrasive surfaces will clog and glaze. Lapping assures you are working on a good surface.
With that said, I lap my 4000, and 8000 every couple of razors. I lap my Eschers about every 10 razors.
If you are dishing the surface of your hones, while honing razors, something is really wrong...
I hope this helps.
With that said, I lap my 4000, and 8000 every couple of razors. I lap my Eschers about every 10 razors.
If you are dishing the surface of your hones, while honing razors, something is really wrong...
I hope this helps.
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+1 A DMT 325 after each use and they are always clean and flat.
no, coticules require lappping rarely after initial time. Some of the old time users never lapped at all.
Those Naniwa super stones glaze up so fast, you'll know when you need to lap them or at least clean the swarf of. Doesn't take much though, no need to waste a whole layer of good stone.
On a Coticule you don't need to lap it often as it doesn't glaze up as much and rubbing it with the slurry stone will always keep the surface fresh.
You can get away with a slightly dished Coticule if you use it as a finisher, it's like adding a layer of tape to finish the edge. But if you follow the Coticule with another hone (Esher or JNAT for instance) your edge may not touch the hone on your next stone (unless that one is also dished).
If you use your slurry stone mainly on the ends of the hone where the high spots are you can even out the wear on the hone keeping it (near) flat for a longer time, reducing the need to lap it often.
On a Coticule you don't need to lap it often as it doesn't glaze up as much and rubbing it with the slurry stone will always keep the surface fresh.
You can get away with a slightly dished Coticule if you use it as a finisher, it's like adding a layer of tape to finish the edge. But if you follow the Coticule with another hone (Esher or JNAT for instance) your edge may not touch the hone on your next stone (unless that one is also dished).
If you use your slurry stone mainly on the ends of the hone where the high spots are you can even out the wear on the hone keeping it (near) flat for a longer time, reducing the need to lap it often.
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When new, I do a full lapping with pencil grids. Thereafter, I just run the DMT over them a few times before each use.
- Thread starter
- #14
Okay, part two of the question. If I'm honing more than one razor at a time, do I need to lap the stone in between each razor, or do I just lap it when I'm done with all of them?
I ran two razors as a test.
Before
After 2 razors
After a couple of laps with the DMT. You can see high and low spots.
So I would recommend lapping after each use. The edges were great, I then took them to the JNAT.
Before
After 2 razors
After a couple of laps with the DMT. You can see high and low spots.
So I would recommend lapping after each use. The edges were great, I then took them to the JNAT.
I ran two razors as a test.
Before
After 2 razors
After a couple of laps with the DMT. You can see high and low spots.
So I would recommend lapping after each use. The edges were great, I then took them to the JNAT.
Alfredo, the Super Stone in your pic is the yellow 8K. Did you finish your razors on a JNAT immediately after the 8K or also added a Super Stone 12K?
Marco, I no longer have the 12k stone. I used the one micron lapping film after the naniwa 8k. The 1 micron film is roughly equivalent to 12k.
Ohhh sorry Doc, you already told me this! How exactly do you use your JNAT after the 1 micron film? With clear water only or some slurry first?
I ran two razors as a test.
Before
After 2 razors
After a couple of laps with the DMT. You can see high and low spots.
So I would recommend lapping after each use. The edges were great, I then took them to the JNAT.
It seems strange that after use the stone does not dish but rather bulge in the middle, although I found this rather typical for Naniwas SS stones, weird creatures...
The SS stones warp more than they dish 
Thats the reason I sold them, I hated the constant lapping, and you never knew if your stone is flat or not.
Thats the reason I sold them, I hated the constant lapping, and you never knew if your stone is flat or not.
