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-   -   Test for knife sharpness (http://forums.pelicanparts.com/showthread.php?t=879905)

sailchef 08-22-2015 09:36 PM

This thread reminds me of when I began working as a chef a gazillion years ago.

To test how sharp my knives were, I would show off by shaving the hair on my arm. They were mostly German carbon steel.

With todays stainless Japanese knives you could take your arm off if you slipped.

sc_rufctr 08-22-2015 10:12 PM

Quote:

Originally Posted by rusnak (Post 8762858)
Not sure what you mean by that. You'd have to heat the knife to a white hot 1000F to re-temper it, and at least 200F to anneal it. And to sharpen a knife, you are not adding material, you are taking it away. Even with a stone. In the manufacturing process, the grinding is done on a machine with a belt, and then finished on a rotating stone wheel.

<iframe width="420" height="315" src="https://www.youtube.com/embed/3ud7Azm3luw" frameborder="0" allowfullscreen></iframe>

Great vid and it's interesting that they use a piece of foam sponge to test sharpness.

GWN7 08-23-2015 09:29 AM

I use my lansky sharpening system to hone the broadheads for my bow to the point where I can shave with them. During bowhunting season most of my left arm was hairless from testing. :)

jyl 08-23-2015 01:20 PM

Grrr. Cherry tomatoes are bouncing off.

masraum 08-23-2015 01:24 PM

Quote:

Originally Posted by jyl (Post 8764461)
Grrr. Cherry tomatoes are bouncing off.

Hahah. Maybe you need to use one of these?

http://www.campingmaxx.com/media/cat...lingshot_6.jpg

jyl 08-23-2015 02:31 PM

The wrist rocket bounced off my blade too :-(

Shaun @ Tru6 08-23-2015 06:57 PM

Just don't see if your wrist will bounce off the blade.

jyl 08-23-2015 09:35 PM

Quote:

Originally Posted by masraum (Post 8762612)
<iframe width="640" height="480" src="https://www.youtube.com/embed/IgqJBF_K6Yc" frameborder="0" allowfullscreen></iframe>

We should be shooting for this

<iframe width="853" height="480" src="https://www.youtube.com/embed/UsgPG-HOzd0" frameborder="0" allowfullscreen></iframe>

These Videos are humbling.

aigel 08-23-2015 09:59 PM

LOL! Splitting hairs almost literally! How about COOKING something? Seriously, how sharp does it have to be for the average meal? PLUS - is that razor sharp edge going to last through cutting up a meal's worth of chow? Or in your daughter's case, through 50 people's worth of stuff?

G

WPOZZZ 08-23-2015 10:59 PM

Quote:

Originally Posted by jyl (Post 8764461)
Grrr. Cherry tomatoes are bouncing off.

With all those tomatoes you're cutting, I hope you like pasta, stew or pizza.

jyl 08-24-2015 05:26 AM

If I was actually cutting tomatoes, I'd be happy. So far, I have been giving tomatoes a gentle massage, maybe some friendly tickling, with my not-sharp blades. I'm the opposite of happy.

gtc 08-24-2015 09:29 AM

Holy crap... someone made some serious commission on that big boy.

Just curious, do you ever send them back for sharpening?

Quote:

Originally Posted by Hugh R (Post 8762830)
Some run them down, but I have a big block of Cutco kitchen knives. They aren't the sharpest, but they hold an edge for a long time that is adequate for me.

http://forums.pelicanparts.com/uploa...1440215252.jpg


masraum 04-11-2022 09:11 AM

Quote:

Originally Posted by jyl (Post 8765095)
If I was actually cutting tomatoes, I'd be happy. So far, I have been giving tomatoes a gentle massage, maybe some friendly tickling, with my not-sharp blades. I'm the opposite of happy.

LOL! I'm sure the tomatos are loving it unless they are calling out "metoo"

Blast from the past.

GH85Carrera 04-11-2022 09:25 AM

I have my grandfather's old butcher knife from when he worked the floor cutting up animals at Armour and Co. I can sharpen it to crazy sharp, and then I feel like I need to wear Kevlar gloves and long sleeves. It is scary sharp, and I almost always somehow just touch it to my skin and I am bleeding. For most of the cooking we do, just pretty sharp is fine.

When we first got married I sharpened all my wife's dull as heck knives. She was pissed as she would get cut just getting one out of the drawer.

pwd72s 04-11-2022 09:37 AM

Got tired of sharpening Cindy's kitchen knives...1970's vintage Chicago Cutlery, before they cheapened the steel. I bought her one of those electric diamond sharpeners...good enough for what she does. For my pocket and hunting/fishing knives, I use a arkansas oil stone mounted on a
recessed block of 2X4...makes 'em sharp enough to slice a held up piece of paper....

Most of those videos involve giving the knife an edge that won't last long...


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