Sharpening domestic knives etc

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We gave away one of our best kitchen knives the other day. We still have plenty of them, but now that the nicest one was gone, it was time to try to make the remainder cut better. They mostly had an edge that was far too thick.

One of them, a bit blade designed for chopping on a board, was not sharpened right to the handle. Why on earth do they leave a 'safe' unsharpened portion about half an inch long on a knife like this??? It is a nuisance when chopping cabbage for coleslaw etc.

Anyway, I got a full bucket of water for cooling ...and my 4" disk grinder and gave all of them a going over. I gave them all a lick on a medium stone, then finished them on a Tri-Angle Sharpmaker that one of my step-daughter's suitors sent us from the USA. I am looking forward to preparing the next meal now.

That's the chit-chat out of the way. Now for the more interesting stuff.

I once worked in a big fish-processing factory. There were hundreds of knives on site...conventional hand-held ones and circular blades that fitted our Baader fish filleting machines. As a fitter it was my job to sharpen these circular blades. They had to be rotated by hand against a pair of fine grindstones in a purpose-built machine. I asked how I could tell if they were sharp enough, and the best advice I got was that they would catch on my thumbnail when I dragged the nail lightly over the edge.

Flesh recovery as a percentage of the whole weight of a fish was a big deal at this factory, so knife usage was studied quite a bit. Many of the filleters would have filleting knives with the bevel ground on just one side. A right-handed filleter would bevel the left side of the knife.

Naturally I obtained one of these knives for my own use.

My family have filleted heaps of fish. We stay on an island, and at the beach is an old shed with one of these filleting knives jammed in behind a dwang inside the door of the shed. The stone that the knife gets sharpened on mostly is an old broken bit of what appears to have been a medium grit, square, scythe sharpening stone. It is not the ultimate in sharpening tools, but it has served us for many years. Just a few wipes down the blade occasionally and the knife works well.

Anybody else bevel a filleting knife on just one side?
 
coote said:
Anybody else bevel a filleting knife on just one side?
Yes, the makers of Japanese sushi or sashimi knives. Single bevel (chisel ground) blades are common in the trade. Watching the sushi chef working the fish and making those edible mini works of art is half the fun of a trip to the sushi restaurant.

<Homer Simpson voice> M-m-m-m-m-m-m.......... Sushi. ;) :D
 
In some cases chisel edges are a real pain to sharpen. At least to sushi standards.
 
None of the fishermen I know use chisel grinds, but frankly few of them actually know much about sharpening. I sharpen a lot of such knives and they are often in horrible condition and have been for some time. If you want to run one side of the blade quite low to the media being cut then a chisel grind makes sense, ideally though a light back bevel would seem to be useful as otherwise there could be issues with control, similar to with a drawknife.

-Cliff
 
Speaking of drawknives Cliff, do you hold the flat side or the bevelled side of a drawknife against the wood you are cutting?
 
My buddy cleans fish with a butter knife sharpened down to a two inch nubbin . I think he does it to bug clients he guides for who have expensive fileting knives .

I,ll have to try a single bevel on mine . I am not a big fisherman but the next time I,ll give it a try .
 
Good story Kevin. You don't need a hi-tech knife to clean fish. Many fish would have been cut up with rock flakes or sharp shells in the past.

And of course you don't need a knife to enjoy eating fish. Sometimes I've lit a fire on a beach and simply dropped a fish into the coals. I leave the scales on. I leave it on one side for a while, then flip it over with a couple of sticks. I then pull it off the fire and let it cool down a bit (preferably on a nice big flat, clean rock rather than the sand. The burned skin and scales pull away to expose the succulent flesh. The gut shrinks and you don't need to remove it beforehand.

Your fishing guide story reminds me of something I read where a big game guide ordered a custom knife that he could easily sharpen with a file.
 
coote said:
Good story Kevin. You don't need a hi-tech knife to clean fish.

I don't think I have ever seen a fisherman actually use a fillet knife. What is most common locally is a well used chef's knife. After about 1-2 generations of sharpening that wide blade has been reduced to a cm or so wide so isn't a chef's knife anymore and is a kitchen utility/slicer and the fillet knife during fishing season. Every now and again they will crack off and they get recycled for cutting out the tongues. I saw a carbon opinel used really heavily, the blade was horrible with rust but still zipping readily through the fish.

-Cliff
 
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