My $5.00 ceramic knife has lost it's razor edge after about 6 months of
daily use. I like the knife and will purchase more ceramic knives and
get better quality. But, for $5 it was a good introduction. I looked
on the web and attempted to sharpen it with the fine/coarse "Smith's"
diamond sharpener I have that is about 1" x 4" and has served me well.
I only worked on the knife for a few minutes and since I didn't know
what I was doing and afraid of doing damage, I stopped. What's the
method to correctly sharpen ceramic knives?
Fine for the $5 knife I got at Aldi's but one could make a substantial
investment in ceramic knives. Are you saying to stay away from Ceramic?
I have a few Stainless Steel knives and I don't like them, I prefer
carbon steel knives and I know how to care for them. But the ceramic
one I have I just loved while it was razor sharp.
No, just be careful with them and don't let them get nicked. Unless
you're slicing sausage with sand in it, they take a hell of a long
time to get dull.
Well, maybe you'll find a way to restore them. *Good* diamond hones
are so friggin' expensive in all but the smallest sizes that I avoid
them -- or anything that requires them to sharpen.
Maybe silicon carbide is hard enough; I don't know. Anyway, remember
that you don't have to worry about burrs, so you can drag the edge
across a stone, rather than pushing into it.
I'm with you on carbon steel knives. I have some that are 60 years old
or more. My parents sold Sabatier (plain carbon) and Zanger (440 ss)
in their store, so I have some really fine kitchen knives. And at
least 30 sharpening stones.
For use rather than show you may be better off using
commercial food prep cutlery. The new "high carbon
stainless" takes a fine edge, and the less expensive lines
such as Mercer [made in Taiwan using German HCSS steel] seem
to be a very good value. Mercer is sold in the restaurant
supply stores and not the big box outlets.
I have dealt with webstaurant and have found them to be
reliable and easy to do business with.
I particularly like the Mercer wide chefs knife and the
straight boning knife for food prep. Suggest buying the
blade guards and cutting sheet at the same time to protect
Diamond abrasives used to be expensive, but they seem to be fairly cheap no
I have a couple of the Eze-Lap hones that I have had for years. The cost o
f them now is about the same as I paid. But taking inflation into account,
they are now about half the price.
and ebay item 321469341282. Not bad for about $5 when you add shipping.
Shows SiC is
harder than Zirconia so you can use that. But the diamond is a lot faster.
I have some diamond coated stainless disks, most made by Kinik. They were
used to flatten silicon wafers and are worn out as far as industry is conce
rned. At least that is what I suspect as they were in the local scrap yard
. But they still work well. The only problem is they are relatively coars
e. Too coarse for sharpening knifes.
But back to how to sharpen Ceramic Knifes. Just do the same as sharpening
Find of the day. A soft Arkansas stone for twenty five cents at the Habita
t for Humanity store. It was dirty and not close to flat, but rubbing it o
n some sandpaper got it flatter and clean.
What are you doing to these poor things to dull them, Tawm? I quickly
realized that I couldn't use them to wedge chicken thighs from their
sockets (chip), and I broke my ceramic chef's knife by trying to cut a
sweet potato with it. As it broke through the halfway point and the
potato gave way, the knife snapped in half on the poly cutting board.
I learned a hard ($25) lesson there. The ceramic paring knife doesn't
seem to ever dull, though.
I like the relative coarseness of the 600 grit diamond plates for all
my carbon steel knives, but prefer the 1200 grit diamond for ceramic.
The 600 roughed out the chip, and the 1200 sharpened it. Even with the
diamond, it takes forever. But because they stay so sharp for so long,
I have little experience sharpening ceramic.
Well, maybe that's worth a try. I picked up some samples of diamond
hones at IMTS a few years back, and I've used them for honing WC
brazed-tip tools. They look like a narrower version of those you've
linked to. They're OK, but I'd want a larger stone for working on
Hmm. It's worth a try. If you've ever ground carbide tools with a
green wheel (SiC), you've probably noticed that you don't get a great
edge, and that the wheel wears pretty fast.
But it may work better honing by hand. Tom should give it a try and
let us know.
Good. I love tose, and have quite a few in different degrees of
hardness and grit. That's what I use for most of my cutting edges.
I'm not sure if it would work on ceramic knives, but I made a leather belt
for my HF 1X30 belt sander and made a power hone. If it was charged with
some ultra fine diamond compound, it might be great for sharpening ceramic
knives. I'm guessing the compounds for steel wouldn't work on ceramic,
haven't tried though.
It sounds as if you are well fixed for sharpening stones, but if you want a
diamond sharpening stone look on Ebay. I think the Chinese military encou
raged the manufacture of diamond coated tools. At any rate there is a larg
e variety of diamond coated things on Ebay.
is harder than Zirconia so you can use that. But the diamond is a lot fast
SiC does not work real well for honing carbide by hand. Although the SiC i
s hard enough, it is not strong enough.
Thanks, George. Maybe I'll break down and give them a try. The price
is right. You can pay a lot more than that for a hard Arkansas stone.
I have a couple of 6" x 2" stones, and they sell for over $40 each
I doubt that any stone from HF, despite their claims, goes finer than
300 grit. They're fine for yard tools, but I wouldn't sharpen one of
my good knives or woodworking blades on one. It's OK for my pocket
knife since that, usually, is relegated to cutting string or cable
ties, and opening packages.
I keep a set of DMT paddles (1x2.5") in the truck and have 2x6 hones
Go with DMT (best) or EzeLap (better) over HF (cheap/inconsistent).
The Eze seemed coarser at first, then got finer, while the DMT hasn't
changed in 20 years.
Amazon has great deals on them.
eBay has outstanding deals on them on occasion.
Buy a diamond hone and keep/use it forever.