Thread: Chinese 12k

I just got my Chinese 12k from woodcraft..Great Success!!!
Does it need any flattening or anything? If so I have the norton flatening stone, will this do the trick and shoud i do like I do on my Norton 4/8k?

No it won't. Norton flattening stone is not hard enough to lap the chinese stone, the chinese will probably just eat away at the flattening stone. Also, I noticed the norton flattening stone left my norton 4/8k a little rough. I bought a dmt 8c which works awesome but of course is more money for yet another stone.

I know some people here mention that they have used 3m wet/dry sand paper to lap on a glass or tile that is perfectly flat. Probably don't have to worry about grit being embed since it's such a smooth stone.

Originally Posted by tsenfw

I know some people here mention that they have used 3m wet/dry sand paper to lap on a glass or tile that is perfectly flat. Probably don't have to worry about grit being embed since it's such a smooth stone.

I used sandpaper to flatten one. The Chinese stone is not porous like the Norton waterstone, and that could be why embedded grit is not the same problem with the Chinese as with the Norton

Not to take anything away from Woodcraft (I bought my DMT's from them), but if you buy a 12k Chinese stone from Chris L, it comes perfectly lapped and shaped.

Originally Posted by hoglahoo

I used sandpaper to flatten one. The Chinese stone is not porous like the Norton waterstone, and that could be why embedded grit is not the same problem with the Chinese as with the Norton

Glad you were able to verify that. I have my chinese 12k coming in the mail. I think I have even gotten grit embedded in my norton 4/8k from the norton flattening stone! Ever since then I've been paranoid about embedding grit. lol

Originally Posted by tsenfw

Glad you were able to verify that. I have my chinese 12k coming in the mail. I think I have even gotten grit embedded in my norton 4/8k from the norton flattening stone! Ever since then I've been paranoid about embedding grit. lol

You can use a scotch brite pad under running water to remove any potential grit. I always do this after lapping - just in case

Jordan

Most likely, you will find that the 12k is not even close to flat. It will take patience to get it flat as it is quite hard but it will be worth the wait! I think Chris still has some slurry stones left in the Classifieds so you might want to get one before they are gone. Adding a slurry to this stone definitely broadens its usefulness and speeds up this very slow cutter.

I'm confused now, so I should flatten it. But with what again?
Sandpaper? What grit in that case?
Or something else?

I'd use 600-1000 grit wet-dry sandpaper (used wet) on a flat surface.

Jordan

Go ahead and start with the 600 to 1000 sandpaper. If you find that the hone is significantly not flat, that is, you find a high spot that is being cut and the rest of the hone is not being touched, then I would suggest that you switch to a coarser paper in the 200 to 300 range. Then, when you find that the hone is nearly lapped, then go ahead and switch back to the finer paper. Doing this will make it go a lot faster.