You know your INFI is sharp enough when...

E

emt1581

Joined
Dec 28, 2011
Messages
910
When sharpening, how do you know if your INFI is sharp enough? Do you try to cut something with it as a control measure? Run your finger tip across the blade? Or do you wait until you get to the task at hand and if not good enough...sharpen some more?

Thanks

-Emt1581
 
I use paper until I have the edge where I want it and then I shave a little hair off my skin to finish off. If I can shave an area of skin clean then the knife is sharp enough for what I need. 3000 grit sandpaper and a strop to finish.
 
I would say that cutting paper is necessary, but not sufficient. Shaving arm hair is sufficient, but not necessary. My 2 cents :)
 
...when just looking at the edge brings tears of blood to your eyes.
...When slashing the air provides glimpses into the future.
...when the hairs on your arm jump off before you get to cut them and all you hear is a little eeeeeeeeee!!!! ;)

:D
 
Jaxx said:
...when just looking at the edge brings tears of blood to your eyes.
...When slashing the air provides glimpses into the future.
...when the hairs on your arm jump off before you get to cut them and all you hear is a little eeeeeeeeee!!!! ;)

:D
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+1 :D

DSCN1746.jpg
 
When I blow on the edge and it makes a pitch of at least an octave above concert A :cool:

The arm hair test has never worked for me. My arm hairs are really thin and sparse. Instead, I try push-cutting through a tomato without holding it stationary.
 
uyotg said:
When I blow on the edge and it makes a pitch of at least an octave above concert A :cool:

The arm hair test has never worked for me. My arm hairs are really thin and sparse. Instead, I try push-cutting through a tomato without holding it stationary.
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Oh! ...So you're close!! When you get your Busse sharp to the point where slashing the air while spinning counter clockwise makes your knife sing Knife Party by the Deftones a cappella, then you'll know you're there. :D:D:D


;)
 
I call them sharp when they push cut through phone book paper and shave clean with no pressure.
 
When you drop a hair on the blade and it hits end first and as gravity pulls it down you have two curly halves of hair split and hit the floor, then you are sharp enough.

When you shave the hair on your arm and you can shave it off in layers like a wood plane , you are sharp enough.
 
When swinging the blade through the air causes a Nuclear explosion....
 
When you drop it tip down and it cuts through the Earth's crust and sinks all the way to the core, Never to be found again until one unknown volcano erupts billions of years from now and whatever advanced (or primitive) civilization or being discovers it among the flow of lava. Did it cause the volcano eruption? Is it a gift from the gods? is it an omen of more catastrophic natural events to come? These answers may never be answered, despite our best efforts to document history, but you will know, only you will know, you just accidentally dropped a Busse to the ground.

Hey, I like this game
 
uyotg said:
When you drop it tip down and it cuts through the Earth's crust and sinks all the way to the core, Never to be found again until one unknown volcano erupts billions of years from now and whatever advanced (or primitive) civilization or being discovers it among the flow of lava. Did it cause the volcano eruption? Is it a gift from the gods? is it an omen of more catastrophic natural events to come? These answers may never be answered, despite our best efforts to document history, but you will know, only you will know, you just accidentally dropped a Busse to the ground.

Hey, I like this game
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Nice! :D

skwurll said:
when you can make fuzz sticks out of a ceramic coffee mug.
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Nice! :thumbup:

PeterPHWS said:
:eek:Simple ... when Chuck Norris cuts himself:eek:
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Winner!!! :D:D ;)

lmao!! :)
 
two components to ensure that an edge is sharp across it's entire length:

1: visual inspection at very close range shows that every single mm of actual cutting edge was struck by each grit of stone. If a rough area or non-polished spot remains, I go back over it. If there is a visible bur I run the blade back and forth at a shallow angle on my pants leg til it's knocked off, then reinspect.
2: finger test. I do this differently than a lot of people, I run the edge at about 45 degrees over the tip of my thumb where the callous is thickest until it pulls up a thin layer of skin. This sounds bad - but keep in mind that it's a super thin layer, like .002", enough to be visible but nearly transparent. You get worse scratches from sanding or handling gravel. I'll do this 3 or 4 times at intervals along the blade. If there's a spot where I stopped hitting the actual cutting edge at say 220 grit, I'll feel the roughness. I'll also feel any remaining burr.

if I'm in a hurry or I'm doing multiple blades/a lot of blades in a short amount of time I'll skip the finger test and take more time looking at the cutting edge, making sure the last 3 stones (600, 1000, and 3000 polish tape) at hit the actual cutting edge from ricasso to tip.
 
When you cut yourself bad and you don't feel it. Or as said above, when it canslice the smallist bit of skin of your finger, I'm glad im not the only one who does this
 
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