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Hi guys just received a chinese 12k hone I managed to get cheap need some advice now on how to lap it flat any help would be greatly appreciated. As in what grade of sand paper will be needed to get the job done its got a loverly smooth surface but its obviously far from flat and as I have elbow problems I want to no the fastest and easiest way to get it flat.
Here ya go. This is how I did mine. Hone Lapping 101 - Straight Razor Place Wiki
Grant
Get yourself a DMT8C (diamond hone, 8" in length, coarse 325gr). Put down something to keep your work surface dry, lay the DMT on the surface, wet it, then start to rub the face of the C12k against it. The C12k builds up a LOT of slurry real FAST, so you'll have to stop occasionally and wash away the buildup. However, it shouldn't take too terribly much to get a good flat surface on that hone.Quote:
Originally Posted by RobinHood68
Also, don't forget to put a bevel on the sides of the hone. You don't want them to get chipped, and you also don't want the irregular cut to mess up your delicate edges. It doesn't take much, just hold the DMT at an angle and rub it down the corners of the hone until you just start to see a smoothed out bevel forming.
Hope this is some use to you!
Robin, I don't know what prices are for D8C plates in the UK. I understand they're more costly outside the states. Mid $40s to mid 80s here. I destroyed one by following the method listed here. The C12k is very hard. No, I'm not worried about the diamonds, but about the nickel binder that holds them to the plate. If you're gonna use the DMT, the best advice I've seen (from Holli4pirating) is to do it either at the sink under running water, or under water in a tub or bucket.
+1 on running water.
The C12k will probably ruin a DMTc pretty fast, Its not designed for lapping
The xc or xxc should be able to handle it tho
Do you have a belt sander?
+1. I use a 12" x 12" granite tile ($10 at Home Depot) instead of a countertop. You can buy a lot of sandpaper for the cost of a DMT diamond plate.Quote:
Here ya go. This is how I did mine. Hone Lapping 101 - Straight Razor Place Wiki
Grant
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Charles
I lapped mine with a progression of wet/dry sand paper. Started with 220 then to 400, then 600. Some guys like to go higher, but I found that since the chinese hone is so dang hard it will wear down the sandpaper. The 600 grit smooths out and leaves a nice surface. YMMV of course, but it 6 dollars sure beats the price of a DMT!
Good luck, I love my chinese natural. Leaves a great edge.
I just used 240 wet and dry paper and then smoothed it out on 1000 grit. I then rounded the corner a little with the 240. Worked fine.
Going to go get myself a granite tile and a good stock of wet and dry the stone looks relatively smooth and like was said will be cheaper than a dmt let you no how I get on thanks guys.
I have not heard of a DMT 325 grit being ruined by a Chinese 12K before and from what I've experienced it works with anything I have...I mean the stone is hard and takes a while but it can be done from what I hear. :fim:
I've been using a DMT C or 325 for years on Chinese 12k's, making slurries, etc...
The stone shows wear, but it still works...
Finally got it lapped today got it nice an smooth and flat going to give it a go over the weekend see how it goes.
I toasted one. I was new to honing. I always thought I ruined it on the c12k, but I may be mistaken there. I tried to flatten the lovely bride's translucent arkie. Sigh. Though the replacement isn't impressive either - immediately got the large oval gray spot in the center that won't go away. It never faced a rock except under running water.Quote:
Originally Posted by Disburden
Make something foolproof and they just make a better fool...
+1- I used the same approach successfully, but the lapping did take a good while for the 3x8" stone.Quote:
Originally Posted by MaritimeFanatic
I got one of the Chinese 15k stones from Ebay, I know its most likely really a 12k, but as I dont have a 12K I cant compare. The stone is cut across the sedimentary layers not with them like a Coticule. Is this normal for the Chinese stones? It seems to polish a razor fine, but you can feel the razor crossing over into the different layers as I do my X pattern.
At the risk of being a broken record, there is no such thing as a Chinese 12k nor 15k. As a natural stone, there is no appropriate grit rating associated with it. You've never heard of a 10k coticule or an 18k Escher. The reason for that is the same. A natural rock has no grit rating and it is inappropriate and deceptive for a vendor to attribute one to it.Quote:
Originally Posted by Loric
I like the tune of that broken record Ron :D
I have taken up the name PHIG for the Peoples Hone of Indeterminate Grit. I rather like that one at the moment...
[QUOTE I have taken up the name PHIG for the Peoples Hone of Indeterminate Grit. I rather like that one at the moment...[/QUOTE]
:bow I like it! I've referring to them as "chinese natural" Oddly enough, hones are not what shows up on a google search when you enter that in............:o whoops.
Although I appreciate your insight, my question was to weather the orientation of the sedentary layers made a difference. I had also pointed out (poorly) that they were most likely the same stone. I may not have had the experience to communicate that properly, but if you are going to critique my diction, you could at least attempt to give me an answer to my intended question.Quote:
Originally Posted by Utopian
As the common term for these stones is Chinese 12k, thats the only reason I used the term...not to mention it had been the title of the thread I was adding a tangent too.
Fine.
The answer to your original question is no.
Thank you very much.
I believe most people don't really care what the actual grit is of a natural stone, but how it "behaves". Does it behave and cut like a 4000 grit, or does it behave and cut like a 12000 grit? Grit ratings are just a convenient overall rating system. If you have a very fine natural stone and it cuts like a 12K synthetic, why not call it or liken it to a 12K? When all things are considered, grit is just a comparison system. Does .5 micron (or grit) cut better or worse than .5 micron CrOx or , FeOx or CBN? They are all the same micron rating. But because of the shape and hardness of the compound they cut drastically different and produce vastly differing edges. Don't get hung up on grit ratings. Look for a fine stone, be it natural or synthetic that will behave like a 12K and you will be happy. In my opinion, anything above the 12K-15K grit ratings are not really grits as much as polishing abrasives. You will get a different finish off of a 1K stone than you will get off of 1K grit AlOx or SiC sandpaper, but they are all the same grit. Remember we are here to help, not condescend or be stone/hone snobs. If you scraped the label off of a vintage Escher, would it polish better than a no name Thuringian? Other than collector value, they are the same. I would rather have a cheap Chinese 12K or no name Thuri that cut and polished well than an overpriced Escher because it has a label on it. Rick
Quote:
Originally Posted by gssixgun
Since I grew up during the Cold War, I call it a "ChiCom." But, PHIG does have a ring to it...
Is that like the Judean People's Front? (credits to Monty Python of course!) :)Quote:
Originally Posted by gssixgun