the side of the stone is removing metal from the edge. help. what to do?

[BJJ]

Hey guys...

I have some troubles with lapping, the stone would take a lot of time to lap.. which are naniwa super stones....

somebody told me to soak 5 minutes before lapping, it works jusst fine!!

but I still have the problem which was the same before...

the side of the stone is removing metal from the edge

somebody told me to soft the sides of the stone...i did it so...

i have a dmt .. than i made some 45 degree angle lapping in the side... than make the straight razor stroke..
still not good...

thank I kind of make a 15/25/45 degree lapping ... trying to make a little square finalization in the side of the stone...

that didn't work as well...

I hope you guys help because i really want to refresh larrys razors and I can because this naniwa 12k just does not get nice...

by the way here is the picture




best regards.

 

[Jim]

If you lay the edge side of the DMT across the stone does it lay flat? Can you see light under the edge of the plate? If the stone is not really flat then this could be the problem.

You can try a pencil marks all over the stone to see if you have low and high spots after lapping.

 

[Kentos]

You also might be dragging the shoulder across the stone too. Can you post a pic of your razor?

 

[jpcwon]

I tend to try and make a more "rounded" edge when chamfering the stone, rather than cutting a 45ish degree beveled edge. I ran into the same problem with my Nani 12k , and I actually foud out that it was my technique more than anything else! I was putting too much pressure on the heel-end of the razor....Evening out my pressure seemed to resolve this issue for the most part...

 

[mikeadams]

I have been told that naniwas swell when they are soaked, and should be lapped like how they are going to be used. Since you only have to wet down a naniwa to use it, I basically just lap it under slow running water. I can't tell you if the swelling is true or not, it's just what I've been told.

Steve

 

[BJJ]

You also might be dragging the shoulder across the stone too. Can you post a pic of your razor?

Nahh, I made that test... making the stroking without the shoulder and it would be the same problem

 

[Kentos]

Nahh, I made that test... making the stroking without the shoulder and it would be the same problem

How are you checking for stone flatness?

Does it happen on both sides of the razor?

 

[AjaxLepinski]

I ran into the same problem with my Nani 12k , and I actually foud out that it was my technique more than anything else! I was putting too much pressure on the heel-end of the razor....Evening out my pressure seemed to resolve this issue for the most part...

I have this problem too. In my case, I let the scales drop causing gentle pressure on the toe and too much pressure on the heal. I compensated by holding the razor with both hands, fingers on the spine to keep even contact.

There is another post, similar problem: it was suggested that the blade may be warped. Rolling x strokes and rolling circles are used to sharpen a warped edge.

Hope this helps!!!

 

[noahpictures]

I would draw straight vertical and horizontal lines with a pencil and a ruler to see if the stone is nice and even. After lapping you'll certainly know if it's evenly flat. If you've rounded the edges and the stone is evenly flat then you are using too much pressure on the heel.
At the beginning that's what I was doing; the heal of my razors were much keener than the toe. For some reason I couldn't adjust the pressure properly so I raised the left side of stone (toe side) by half of an inch by putting folded paper towels and that evened it out and the results were nice, even bevels.

Now that I have more experience I don't need to raise one side but it certainly helped me back then.

 

[BJJ]

How are you checking for stone flatness?

Does it happen on both sides of the razor?

yes it does ...

Jim told me about checking the stone flatting with the DMT.... to put across and see if theres any space between the stone and the dmt...


is there another method?

that one is a nice one to check IMO .. but other ones would be very welcome

 

[Wid]

Flip the hone 180 degree and see if it exhibits the same behavior. If it does then it's you technique.

 

[BJJ]

man this thing it's been very frutasting...

i tryied many things ... angles... pressure ... lapping the stone like this ... lapping like that ...

and know...

I dont know how that happens... the stoke north to south is good (not removing metal from the edge)
and the stroke south to north is still removing making the same problem....

well... at least that's half way ... that's something...

what i'm doing north to south stroke is i'm apllying a little more pressure in the tip so it seems that its balancing more ...

but when i do this south to north stroke i'm having the same problem

 

[Jim]

man this thing it's been very frutasting...

i tryied many things ... angles... pressure ... lapping the stone like this ... lapping like that ...

and know...

I dont know how that happens... the stoke north to south is good (not removing metal from the edge)
and the stroke south to north is still removing making the same problem....

well... at least that's half way ... that's something...

what i'm doing north to south stroke is i'm apllying a little more pressure in the tip so it seems that its balancing more ...

but when i do this south to north stroke i'm having the same problem

You mentioned that the stone did not pass the straight edge test,that there was light showing under the straight edge of the lapping plate. If the stone is not flat you are going to be spinning your wheels.

 

[BJJ]

You mentioned that the stone did not pass the straight edge test,that there was light showing under the straight edge of the lapping plate. If the stone is not flat you are going to be spinning your wheels.

hey jim whats up man...

yes i made sure i rellaped and now it doensn't pass any light....the lapping test is good...

 

[cj121]

IMO, and with respect, unless your honing technique is out or the blade is out, the stone is warped through excessive wetting. The Superstones are prone to to swelling and warpage and are not designed to be soaked at all. I would let it/tthem dry out naturally for a week and lap again. This time, only spritz or spray the stone both during lapping and honing. Don't soak, lightly spray (including the sides) and you will see an improvement in the physical dimensional change.