OK, even though most of you would never admit to it I know that you've got a serrated knife or two hanging around the house. I'm also quite sure that these knives are likely dull (or duller than they were when new) and could use a little edge refreshing. Chances are that the points are starting to round and the edges are dull or even bent over to the reverse side. Well, if you have a knife like this, it's your lucky day.
I've been asked a lot about how to sharpen serrated knives so I thought I'd throw together a little information on how someone can easily do so at home with items easily found at their local Home Depot.
The tools of choice are an assortment of wooden dowels and a peice of emery cloth. Simple enough? I hope so.
I prefer to use emery cloth over sandpaper because it's cloth backed and less likely to tear if caught slightly off angle. I like to use "medium" grit as it cuts fast, but if you want a finer finish, you could use "fine" grit instead.
I purchased 36" lengths of all the dowels shown as well as a package of medium grit emery cloth for less than $10 at Home Depot. I think it was actually less than eight but I lost the reciept so there.
The round dowels are used for round serrations and the square dowels are used for v-shaped serrations.
You will want to start off by mounting the knife in a vise. If you don't have a vise don't worry as you can do this while holding the knife in one hand. It's just easier to do with the use of a vise. I use my EdgePro scissor attachment to hold the knife while I work.
Then select the appropriate sized wooden dowel to use. The right size dowel will fit into the gulley of the serration, will touch the edge bevel, and will not rock or wobble side to side. The 1/2" dowel is the one that is most commonly used for sharpening the serrations on Wusthoff and similar level knives.
Then, I suggest to cover the edge bevels with magic marker. This will help to ensure that you are sharpening at the correct angle as the marker will be removed where the abrasive hits the bevel.
Sharpen only enough to make 1/2 of the rounded tip pointed on both sides of the gulley. The point will become full when you sharpen the next gulley over. You want to only do just enough to raise the tiniest burr (on the reverse) and to just start to remove the rounded tips on both sides of the gulley you are sharpening.
When sharpening try to hold the angle of the dowel constant (the same) for each gulley you sharpen as you did for the others. It's not imperitive to do so but the result will be much more appealing to the eye.
The only thing left at this point will be to remove the burr.
I usually run the knife across a buffing wheel to remove the burr but you can run the knife lightly through a peice of soft wood followed by using a wadded up peice of paper towel to wipe off any residual cling-ons that just won't let go.
So that's it. A grand total of (less than) $10 and maybe 1/2 hr (tops) and your knife is better than new. Now you have no excuses for still having those dull serrated knives lying around do you?
Dave, thank you for the great "how to". Few text books can match the clarity of your explanation. I wish I had had professors with half that clarity over the years. And great photos!
tony
Edited by plastics on 02-09-06 18:29.17. Reason for edit: No reason given.
To all,
You're very welcome and thanks for the compliments!!
Sean,
On your Mac slicer, I'd go with a ceramic rod about 1/4" in width. Simply run the knife down the knife at an angle just slightly greater than what the factory ground in. The idea would be to let the rod roll over the hills and into the valleys.
Excellent!!! This is one post that was far overdue.
Thanks for sharing your knowledge on this one w/ us Dave.
Serrated knife sharpening has always been a mystery to me. It's why I don't own any. Had my eye on the MAC for a while though. Now it gives me good reason to drop the dime on it. Thanks again.
I'm off to my stones now for some touch up work on my kitchen dogs.
One thing worth noting on the MAC style serrations is that they are a very old style of serration that has fallen to the wayside. Some of the first, and most popular, styles of commercially available serrations were scallops used on bread knives made by companies like Clauss of Freemont Ohio. I have a few of their older models and they sharpen up easy (full carbon) and are great bread slicers. Sometimes what's old becomes new again.