Here’s a Trick Question for you…

This topic has 8 replies, 4 voices, and was last updated 06/05/2012 at 3:11 am by BassLake Dan.

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05/22/2012 at 2:22 pm #3256
BassLake Dan
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Things are getting a little slow around my neck of the woods so I thought I would have some brain teaser fun with all you experts out there.

Who can figure out this blade? What is it? How many bevels does it have, and how was the edge finished on each of those bevels? Let’s ask this another way: If you were to set this progression up to duplicate this on your WEPs what would the specs be for it, i.e angles /grits /stones/ laps / etc… ???
05/22/2012 at 11:21 pm #3263
Joyal Taylor
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I’ll give it a go.

The magnification is 200x
2 bevels with coarse diamond stones.
What, at first, looks like a third micro bevel is actually black magic marker that was added after sharpening.

Primary bevel at 20 degrees with 100 diamond
Secondary bevel at 25 degrees with 400 diamond
No stropping
Knife is a Walmart kitchen knife.
05/23/2012 at 4:52 am #3267
Mark76
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I agree with Holymolar. He is spot on. He just made a mistake in identifying the knife. It’s an IKEA chef’s knife.

😉

Molecule Polishing: my blog about sharpening with the Wicked Edge
05/23/2012 at 8:37 am #3271
Tony Pettersen
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Burn the witch! :blink: :ohmy:
i totally dident see the marker.. thats just good!
05/23/2012 at 3:51 pm #3274
BassLake Dan
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OK,.. Time for a HINT:

Holymolar was very observant about the Black Line. He was RIGHT it is a BLACK Line, but it *was not* made with a Sharpie Marker. The hint is that (read very carefully here–>>) the marking material was *applied* another way, not by a Sharpie…
05/24/2012 at 5:39 am #3277
Joyal Taylor
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Does your wife know that you used her mascara to put that black line on the edge?
I’m telling.
LOL
06/04/2012 at 2:30 pm #3417
BassLake Dan
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Well, it’s been 1 week, and no one has really gotten close, or even tried to guess, so I will end the teaser now:

The Black line is a coating of PVD (vapor deposited) Boron Carbide, and the blade is an off the shelf item from Rite-Aid Pharmacy, it is a Double Edged Razor Blade… For those of you that are interested the BC coating provides increased edge life and lubricity.
06/04/2012 at 4:54 pm #3418
Mark76
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That’s interesting! How do you apply this boron carbide? And does result in better edge retention? And doesn’t it make the edge duller? (It probably makes the edge thicker, but if that is only a few molecules, you probably won’t notice.)

Molecule Polishing: my blog about sharpening with the Wicked Edge
06/05/2012 at 3:11 am #3421
BassLake Dan
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That’s interesting! How do you apply this boron carbide? And does result in better edge retention? And doesn’t it make the edge duller? (It probably makes the edge thicker, but if that is only a few molecules, you probably won’t notice.)

You can’t make that work at home, unfortunately.. it is a either lab / or industrial process. Requires equipment that is not usually found in the average garage or work shop. There are, however, coatings that you can apply at home that contain teflon and molybdenum disulfide, They are epoxy paint based, and would probably have very limited life on a blade, but it might be a fun hobby project to experiment with.. Try this source to get yourself a test can of the stuff..
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