how do i sharpen a knife?
March 7, 2006 8:14 PM   Subscribe

how do you sharpen a "sir-rated" (i cant spell) knife?

am i just better off buying another one?
posted by goldism to Home & Garden (10 answers total)
i love your inventive spelling, but you might find googling easier by spelling it this way:


and yes, they can be sharpened, but i take mine to the local hardware store and they do it for me!
posted by subatomiczoo at 8:16 PM on March 7, 2006


Knowing how to spell it found me:
this. Never tried it myself, though.
posted by aubilenon at 8:17 PM on March 7, 2006

Most serrated knives have a bevel on one side of the blade while the other side is "flat" or unbeveled. I have good results when I use a sharpening rod on the unbeveled side.

This technique will not work forever, but you should be able to get at least 10 years use out of the knife if you use only the rod and not a grinder or file.

You should also be aware that the first round of sharpening should be at an angle of only 11 degrees to the edge of the blade (almost parallel to the blade). On a normal blade, you do both sides at this angle, while on the serrated, as stated above, you do only the non-beveled side. Once this is done, you then lightly run the rod no more than twice at 22 degrees per side. This last part is what produces the razor edge.

It took me a while to learn how to feel the rod biting the steel of the blade. It also helps this process to rest the side of the blade not being sharpened against a counter top to support it while the rod is being run along the upper surface away from the counter.

I have several Dreizack knives which we use regularly and I sharpen them every time they are used. I have owned them for 20 years and they show little sign of being worn down.
posted by RMALCOLM at 8:29 PM on March 7, 2006

Professional sharpening at any decent knife shop is definitely worth the (suprisingly low) cost. You'll do this, say, once every six months, depending on usage levels. They can also teach you to use a steel for everyday sharpening.
posted by frogan at 9:22 PM on March 7, 2006

Not for the purists, but I use one of those spring loaded crossed roller sharpeners, and its worked fine for years. maybe the serrations have lost some of their points, but it wasn't an heirloom knife to begin with.
posted by StickyCarpet at 9:25 PM on March 7, 2006

RMALCOLM's sharpening with a rod (called a "steel") works fine for me. Serrated blades normally dull only on the high points, where the blade is widest. A sharpening steel sharpens only those places. StickyCarpet's ceramic rollers work for the same reason.
posted by Kirth Gerson at 7:09 AM on March 8, 2006

The unglazed bottom of a coffee cup is an amazingly good sharpener (if you just need a touch up).
posted by 445supermag at 7:15 AM on March 8, 2006

Tip for a quick spell check: enter sirrated knife into google and it will kindly offer you the correct spelling.

OMG spelling hack!
posted by dersins at 9:17 AM on March 8, 2006

awesome, thanks for all of the help peoples.
posted by goldism at 10:55 AM on March 9, 2006

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