Thread: Naniwa 12k warped?

Originally Posted by Marshal

... hard naturals will make it dish out pretty quickly. Live & learn.

The Norton lapping hone was never designed to lap any natural hones at all. It only is meant to be used on synthetic hones.

Originally Posted by Utopian

Yes, the Norton lapping hone has to be lapped flat--ridiculous but true.

Click HERE for an old thread about this issue. Basically you have to handle your hone the same way regarding wetting each time for the sake of consistency. A hone that is higher in the middle is not a bad thing and personally, I would not bother to lap it away. It will wear down with use.

Interesting. I will try to do this from now on. So if I lapped the naniwa under continuous running water should I use it soaked?

It warped the opposite of yours in that thread. The side I lapped the ends warped up. It was noticeable. I could feel it when honing my blade the blade would hit towards the end of the stroke. And when placing it on a flat surface the ends were almost 1/16 off. I lapped it but took a while. I will try the suggestions from that post

Originally Posted by Hacker7

How badly is it warped? If its a little you can lap it a bit. Lap it on wet and dry paper, the Norton stone is junk. Your first post said its higher in the middle. Like Utopian said you can just use it like that it will wear in. It would bother me so I would lap it. Don't soak these stones they will warp. Good luck.

Sorry meant lower in the middle. But not from normal use. When placed on a flat surface the nods of the stone would be a little off the flat surface. I did lap it yesterday because I needed to use it. But will try out the suggestions in Utopians post

Either first make sure that your lapping hone is flat or else use w/d sandpaper on a flat surface.

I will do that before I lapp again. Thanks for all the suggestions!

I don't alway hone but when I do I don't use the norton lapping stone[emoji1] . In all seriousness I almost got the norton lapping stone but thanks to the good folks here was steered away and bought a dmt 325. I figure with the amount of honing I do that will last me forever plus I tend to make a mess with everything so the wet/dry may get the misses a bit upset when I destroy the kitchen counter. Happy shaving.
Phil

Sent from my SM-G900V using Tapatalk

Yes, pretty normal with most synthetic stones, they do move in the drying/ wetting cycles and are only flat after you flatten them, (grid lap them).

But it’s no big deal. I lap them flat, when I first get them, then just lap them before use after soaking, if needed. I do a quick lap between use, more to clean and remove the skin, (you can see a darker color change, in the stone), swarf and glazing, than to flatten. Just a few quick laps.

Most of my synthetics were grid lapped flat when new and never have been since or just for demonstration purposes.

You want smooth, don’t worry about flat, or you will just lap a lot of good stone down the drain. But if it makes you happy, lap away.

The Norton lapping stone is a pain to use and very messy. A diamond lapping plate in the 300-400 grit range is much quicker, cleaner and more efficient.

Originally Posted by Euclid440

Yes, pretty normal with most synthetic stones, they do move in the drying/ wetting cycles and are only flat after you flatten them, (grid lap them).

But it’s no big deal. I lap them flat, when I first get them, then just lap them before use after soaking, if needed. I do a quick lap between use, more to clean and remove the skin, (you can see a darker color change, in the stone), swarf and glazing, than to flatten. Just a few quick laps.

Most of my synthetics were grid lapped flat when new and never have been since or just for demonstration purposes.

You want smooth, don’t worry about flat, or you will just lap a lot of good stone down the drain. But if it makes you happy, lap away.

The Norton lapping stone is a pain to use and very messy. A diamond lapping plate in the 300-400 grit range is much quicker, cleaner and more efficient.

Thanks. Right now I only have the naniwa12k just for refreshing. But lapped the stone because the way it warped my razor kept digging in on the ends of the stone even with no pressure the blade would hit.

It sounds like you may have other issues with the razor not the stone. Where is the blade hitting the stone?

It is almost impossible for a stone to warp a razor.

What kind of razor are you honing, and what was the condition of the razor?

Post some photos of the razor and the stone face.

The hone is warped. OP has given no indication that the razor is warped.