It appears that the first 2 knives I sharpened actually scraped off the ceramic from the steel core? Normal?
1078743
you must have one darn sharp knife to be able to do that.... i suspect the metal from the knife blade just "colored" the sharpening stick a little bit. hit it with a scotchbrite scrubbie and it will probably turn white again. that's what i did.
1078744
you must have one darn sharp knife to be able to do that.... i suspect the metal from the knife blade just "colored" the sharpening sticka little bit. hit it with a scotchbrite scrubbie and it will probably turn white again. that's what i did.
1078745
Mine worked perfectly on a dozen knives. They discolored the ceramic that returned to normal when I applied oil. The discoloration was metal filings loading up the pores.
1078746
That's not ceramic being scraped off. Those are tiny metal shavings (really dust) from the knives you sharpened. Yes it is normal. Just be advised there is no "steel core" the rod can shatter if dropped.
1154882
There are two stages to this sharpener.. There is a pair of carbide blades that are very aggressive (you will see hair like shavings) as it peels the material off the edge. There are also ceramic rods that do hone to the blades. That said, when using the carbide blades, it is most important that you start at the very root of the blade and make a single pull all the way to the tip of the blade. If you do not do this, you will end up with a mess. I prefer "stones" to the carbide blade solution but it does work to put a fairly sharp edge on a fairly damaged blade in a hurry.
2068498
No! Put this question to rest. The simple fact is that you cannot hone a serrated edge on a sharpening steel. Not only will it not sharpen the knife, you will probably ruin your ceramic hone. But, hey, as a professional knife sharpener, that's just my opinion.
1056984
Its probably defective. You should talk to the producer of your knife about it
1652710
The knives that I bought come from Korea r Japan and they are not made of any kind of steel. They are purely ceramic and they cut very well and don't need any sharpening.
422869
I don't use a ceramic sharpener for this steel. I find if you don't have a stone, a diamond rod sharpener followed by a strop gets this knife silly sharp. It's carbon steel so the diamond rod sharpeners' abrasive surface works well. Stropping helps this knife stay polished and shiny, as well. This is by far one of the sharpest knives I've ever come across. For ~$14, how can you go wrong?
1555998
I have a Boker ceramic knife. I did use the Duosharp to sharpen mine and it will definitely sharpen the knife. Is it the recommended way? Don't know. My instructions tell me to send the knife back to Boker to be sharpened. Brian
792375
Burrs are ceramic not steel. I'm told ceramic burrs hold a better edge. So far that seems to be the case.
8690
As I recall, this machine was a piece of C**p. It did not last long at all and it wasn't cheap. I now have a Sharp, which seems to be holding up pretty well. Good luck!
1573953
You can have a ceramic knife sharpened but really only by a professional with previous experience. all the home ceramic sharpers ive seen really don't work well. I would google a local knife sharpener in your area.
2191730
you will be making a grave mistake if you try to pry anything with ceramic knifes. If you exert too much force it will snap, and you'll be purchasing a new one.....!
2179189
My knives are especially sharp after using mine. If you have used another sharpener that perhaps put a different angle on the blade, you're going to have to run them through the course side a number of times (maybe 50 or do on each side) to get the angle correct. Then 10 or more on each side of the fine stone.
321861
YesBut recently I have been using ceramic knives,the ceramics do hold an edge much longer.The henkels are great but you do need to keep them sharp either with a ceramic,pr diamond steel or a sharpening service or device....I love my good knives,sharp....
980038
Corey All I know is that IT BROKE on my after just a few uses. The sharpness of the knife was wonderful, but I contacted the company a number of times and they never responded to either replace or refund my money.......... Oh, It does seem to be all ceramic. When it broke, I didn't notice any lead coloring, which I know to be greyish in color. It was the white ceramic color.
554639
I read that any Japanese style knife has to be sharpened by either diamond or ceramic because the steel is brittle (vs carbon steel in German etc knives) and the steel steels "shatter" the edge instead of honing it. I don't know if this is true but I would get the ceramic anyway because it hones and sharpens at the same time.
1871194
The concept is not the edge but a fine zirconium grit embedded in the sides and throughout the material. Tiny zirconium stone grains file easily into foods (no zirconium residue) whereas conventional knives depend on a finely honed leading edge pushed through food, taking a bit of steel with it, either chemically or by force. You can lay your finger lightly on the edge of a ceramic knife and it will feel somewhat dull by comparison. But move the knife and it will saw easily into your finger, so be careful. ;)
2217198
As long as you are using the blade marked for ceramic tile, the sparks are normal. It is the coating on the ceramic tile that make the spark. Another tip...the first cut just score the line on the tile through the ceramic part not all the way through. Then the second cut finish by cutting all the way through. That way you will have more control and a nice even cut.