Thread: Chinese 12k stone - Over 2.5 hours to lap ! ! !

Originally Posted by Kingfish

I have lapped a couple of them from some years back and they were not that bad. Brighty's stone falls into the hand carved categorie making it very special!

Does make one appreciative modern abrasives, can you imagine pre-synthetic abrasive aged craftsmen lapping novaculite?

I don't think he was using the word "special" late in the 2.5 hours, somehow.

You overpaid for your hone and wasted all this time lapping it. I can get the exact same result with any 'ebay special'

Originally Posted by Brighty83

Anyway i after all that i put a blade on it.. it has a nice sound when sharpening! Got my blade nice and sharp too (photo below)
I went to test it on the back of my hand.. woops

Originally Posted by HNSB

I fixed up a severely dished coticule in about two minutes with a belt sander. The dust was unreal. I have never sanded anything else that was even close to being that dusty.

Your right about the dust! my shed is.. well.. grey!

Well, it sounds like you went the long way around, but you've got a dead flat PHIG now so ultimately it's worth the trouble.

Originally Posted by Blix

I've bought two C12K's from that Polish seller, one 150x50mm and a 8x3", interestingly the small one took 2+ hours to lap, the 8x3" around 90 minutes, both using a DMT 325.
The large one is superior, very nice and sharp edges off it, yet quite smooth. I think I got a good one.

I'm glad I'm not the only one
The time actually goes fast for the first hour and a half. but by then you can see results anyway so you keep on going!
It dose seem like a nice stone though.. I have a few blades coming so she will get a work out soon!


Anyway, Now that i have both sides lapped.. from what i have been reading people like to have a polished surface on these stones... Has anyone tried leaving one side rough (finished with a 120 grit DMT) and one side polished (finished with a 320-600DMT)??

I only lapped one side on mine, I see no reason to do the other side, it's flat enough to sit nicely in a stone holder.
I have polished mine further with 400-600-1200 wet/dry paper, and 15 minutes with the BBW side of a coticule.

really hoping mine will be one of the flatter less labor intensive models........

Originally Posted by paco664

really hoping mine will be one of the flatter less labor intensive models........

I'm sure yours will be fine. Its worth the time lapping it anyway

Originally Posted by Brighty83

I'm glad I'm not the only one

Anyway, Now that i have both sides lapped.. from what i have been reading people like to have a polished surface on these stones... Has anyone tried leaving one side rough (finished with a 120 grit DMT) and one side polished (finished with a 320-600DMT)??

I think you will find that the best polishing will be achieved from the side of your stone that is the smoothest but you will have fun experimenting what works best for you.

No doubt you will find that slurries made from a small piece of the same stone or even other naturals will greatly expand the use and speed of your stone. Many times in our classifieds at SRP one can be had inexpensively and it is highly recommended. Over time the slurry stone will leave a perfect finish on your stone that will impart great edges.

Its chinese.