Sharpmaker and a knife withno edge...

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billym

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Jan 8, 2006
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My housemate came home from work (outdoor retail) with a "demo" version of a BM 556. It is cool it has a clear handle and an unsharpened blade. Well it had an unsharpened blade until it met the Sharpmaker.
Just using the grey and white rods as usual plus a little back bevel; he had it POPPING hair withing a couple of hours.
I would not believe it unless I saw it.
The knife now has a very fine razor edge; when we looked at it under magnification you could really see a very clean uniform edge.
This really exhibits the power of the Sharpmaker even without the accessory diamond rods.
 
Is the metal in a demo heat treated and finished the same as a regular knife?
 
'Is the metal in a demo heat treated and finished the same as a regular knife?"

That would be my concern as well, since this was never intended to be a functional knife. The only thing would be if they just pulled a blade out the pile before sharpening, then you would be ok. Steven
 
cbwx34 said:
Is the metal in a demo heat treated and finished the same as a regular knife?
Click to expand...

No Idea; it looks exaxtly like a finished knife but no ground edge. Maybe it is not treated.
 
2 hours to sharpen a knife? I can get a 440 folder razor sharp with a $10. Smiths modified to 15 degrees in about a half hour.

Here is how i modified it: I decided to cut a block of wood at 15 and a half degrees (for extra measure to make sure i got an exact angle) and put the Smiths chock stick block on it with double stick tape and drill two 5/16" holes with a machinists drill press (just turn it around to drill the second hole so both holes are exactly the same). Well i took it off and the sticks fit in the hole real tight (just the way i want them). I took out a pocket knife i keep sharp but i never got it to cut hair and i took six passes each side and i tested it on the hair on the back of my hand.

THE HAIR POPPED OFF! :cool:

One dude there was totally amazed when that happened and i could hardly belive it myself! :thumbup:

I personally thought round has to be better because even the best ($500) steels are round and all the hand stick diamond sharpeners are round (as far as i know) and now i am almost positive round is better (triangle seems to be weaker laterally than round). Every knife i have sharpened with it since gets a razor edge and it only cost $10. If i want to use other angles (some like 17 degrees, 10 degrees, etc.) all i have to do is go through the same process using an ordinary block of wood (say a 2X4X10 for example) and all i have to do is use those same $10 ceramic Smiths sticks.
 
sog said:
2 hours to sharpen a knife? I can get a 440 folder razor sharp with a $10. Smiths modified to 15 degrees in about a half hour.

Read the whole post! The knife had absolutely no edge grind in fact it was a bit rounded. I was not talking about a finished knife. This is (was) a safety demo piece.
Click to expand...
 
[The only thing would be if they just pulled a blade out the pile before sharpening, then you would be ok. Steven[/QUOTE]

That is what it looks like; can you tell by looks? I am not an expert on tempering and such.
When I first saw it I thought it was a normal 556 with a clear grip until I looked at the edge.
 
I'd have thought you'd be there for days if the steel was heat treated. I've got a demo knife (CRKT bladelock) in AUS6 and gave up trying to put an edge on with the sharpmaker
 
If the steel isn't hardened it will be very soft, a file will rip into it for example. The corrosion resistance will also be very low.

-Cliff
 
It couldn't have been hardened. I am well acquainted with how long it takes to remove metal with the gray stones. We're talking many thousands of strokes here. Most people would give up long before they had anything resembling an edge. I'm sorry, but I don't buy it either.

And even if your friend really did achieve this, it will not last.
 
I thought the pieces are heat-treated before their final machining. As it took hours, I believe you can put an edge on 440C, but probably with several cleaning of the rods.
 
billym said:
Read the whole post! The knife had absolutely no edge grind in fact it was a bit rounded. I was not talking about a finished knife. This is (was) a safety demo piece.
Click to expand...

Scuse, i didn't realize your demo might not have an edge but i had to regrind the 440 (which is about the same thing unless your knife is S30V).
 
I spoke to the Benchmade reps at the Outdoor Retailer trade show; the demo is heat treated.
They thought it was cool the my friend sharpened it but there was some speculation that it would have been more of a collectible if left unsharpened.

I will bring my digital camera from work and get a picture.
 
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