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Sharpening cheap kitchen knives

26K views 14 replies 6 participants last post by  rick alan 
#1 ·
Hello there

For some unknown reasons I've found myself reading kitchen forums and article reviews quite a lot lately. And I badly want to buy some really good kitchen gyuto, but apparently my sharpening skills are near zero level, so I decided to learn to sharpen first and get knife afterwards.

I've ordered 2 stones, and the 1000 grit arrived today (while 6000 should arrive in a week or two). Immediately after unpacking the stone I decided to sharpen my old cheap knives. I've got old 365+ chief knife from IKEA and 3 different brands petty knives. All of them were super dull. 

After spending for like 10-15 minutes with each knife on the stone I'm kind of puzzled: all the knives are way sharper now (I'm able to cut a sheet of paper with them), but still they are quite far from being razor sharp (compared to Hattori HD petty which was razor sharp OOTB).

I was trying to keep angle at around 15-20 degrees while sharpening, but of course, was quite far from keeping it consistent all the time. 

Yet, the question is: is it be possible to make a cheap knife razor sharp with only 1000 grit stone? Is it just my lack of skill or I need a finer grit stone to finish sharpening?
 
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#3 · (Edited)
Congratulations on your success. Using a really sharp knife is an epiphany, and one that you sharpened is a great feeling.

The fact that the sharp edge will last a relatively short time compared to a knife with harder steel, depends on a few things. The most obvious is how it's used. Also, knives' like yours have a relatively soft steel, so the sharp edge bends with use. Using a steel or strop will straighten it and you're good to go for a while until you steel it again. After a while it'll require another sharpening on the stone.

If you made the edge too thin, it'll start of super-sharp, but then collapse and bend in such a way that steeling may just straighten the weak edge for a very short while before the collapsed -or wire- edge falls off, leaving a jagged dull edge. Steeling alone, can cause a weak edge to come off. Either way, you have to sharpen it again using a stone.

I reckon BDL will have a better and more complete explanation.
 
#4 ·
Unfortunately with just 1000 grit stone, you won't get the knife razor sharp. The particle size is to big and it creates a toothy edge with more bite. Please understand me correctly. The knife will be sharp and it will cut food with ease, if properly sharpened on 1k stone, but you will struggle to shave face with it.

The higher grit you go the more refine edge you will get, and closer to the razor sharpness. But most likely you will not see a big improvement in the performance on ikea knife.
 
#8 · (Edited)
Thanks mostadonte2 and mano!

If I got you correctly that would be the answer for my question:

Actually, Murray Carter used a cinder block and newspaper and had his knife shaving sharp. I lack his skills/experience so I make up for it with a bunch of stones.....

ps your youtube video link is kinda creepy...
 
#15 · (Edited)
Actually, Murray Carter used a cinder block and newspaper and had his knife shaving sharp. I lack his skills/experience so I make up for it with a bunch of stones.....

ps your youtube video link is kinda creepy...
When it comes to hyping/staging supernatural ability Murry I believe learned his schtick from some of the best, Japanese karatika

It will help you immensely in judging angle if you simple cut some some wedges from posterboard marked with any cheap plastic compass, use Ca to harden/waterproof them. Lay your knife on them and you will have a good visual to go by.

Also, keeping your thumb on the blade makes holding 'er steady much easier
 
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