Testing sharpness


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bikerdoc
February 25, 2009, 11:53 AM
You know those register tape reciepts from the super market.
I find they are a good way to test sharpness, slice the edge on the bias, if it cuts smooth it is shaving sharp.

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TMM
February 25, 2009, 02:17 PM
i do almost the same thing - when i sharpen my knife, it only goes back into my pocket if it shaves hair off my arm and cuts a squiggly line through a piece of newsprint (i stab the point in, and as a cut, i rotate the blade one way or another. if it's sharp, it will cut. if it's too dull, it will tear the paper when i rotate the blade.)

tmm

bikerdoc
February 25, 2009, 03:29 PM
good thought, I will try it.

CWL
February 25, 2009, 07:11 PM
A good standard is to place the edge of your knife against your thumbnail at an angle and see whether the blade will slide off or bite onto the nail.

orionhawk
February 25, 2009, 09:01 PM
I'm fond of the receipt paper method. my grandfather used to do the arm-hair shave, or shave some of the "paint" off the side of a pop can.

Rupestris
February 26, 2009, 11:07 AM
A little test I like to use it to remove the clear coating from a magazine cover without removing the color/ink. ;)

hankdatank1362
February 27, 2009, 01:52 AM
I recently splurged for a nice sharpening kit, and have been doing a lot of knife sharpening lately.

My left arm has a LOT of hair missing.

TimboKhan
February 27, 2009, 02:04 AM
I tested the sharpness of my Griptialian when I hit the AXIS lock and the blade fell on my finger. Quite positive, those AXIS locks.

The salesman looked at me like I was the stupidest human on the planet when I said "I guess I will buy this since I am bleeding all over it.".

James T Thomas
February 27, 2009, 03:21 PM
Go ahead and laugh away at this. I'm posting it for your information and amusement.

When I have the opportunity such as holdays and that kind of thing and we have a beef roast, turkey, or ham to carve in the kitchen. Then out comes one of my hunting knives!

I just do not do enough out door activities to use those blades, and so I get some idea of the shapness of the blades I have by carving.
It is not as instructive as skinning game, or doing some crazy destructive testing in the garage, but it puts the knives I like to use.

And then I get to eat.
Satisfaction.

Todd A
February 27, 2009, 04:27 PM
I test mine using sticks of butter. I place the butter in the microwave for 15 seconds, then slice it with my knives. If the knife cuts...well then its perfectly sharp to EDC.:neener:

Brian Dale
March 1, 2009, 04:36 AM
Using knives to cut food, James T Thomas? Now, that's just crazy talk!

:D

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