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Knife Sharpener = Best Lapping Tool?

post #1 of 25
Thread Starter 
I decided to use my steel knife honer (Epitope corrected me) the other day to lap my heatsink...WOW it gives off amazing results. (not knife sharpener)

I have some fine sand paper, but the knife honer easily surpassed it.

Have any of you guys ever tried lapping with a knife sharpener? You'll be surprised at the results!

One of these types:
1667bd891297c8e6516e31e7ae950eab.jpg

I also used it to lap down a penny to turn it into a heat sink...the penny has a mirror like finish. XD


Here is my result with a copper penny (pre-1982):
cimg0814.jpg


The bottom part is with my knife honer (I was holding on to the top part of the penny to polish it). I tried sandpaper on the top portion and it seems a bit rougher.


The indentation is a part of Lincoln's neck area that I haven't filed down yet.

So if you're not getting similar results, I either have bad sand paper or I have a very good honer. (I got my sand paper from a CPU/GPU-shim seller)
Edited by Bluescreendeath - 3/14/11 at 8:07pm
post #2 of 25
How could you use a knife sharpener and get a completely flat resault, if you really have used on of those knife sharpeners you have prob screwed your heatsink base
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post #3 of 25
Quote:
Originally Posted by Kal777;12734196 
How could you use a knife sharpener and get a completely flat resault, if you really have used on of those knife sharpeners you have prob screwed your heatsink base

this
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post #4 of 25
They make flat whetstones. May produce some interesting results. Anyone wiling to be a guinea pig? I don't have one to try.
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post #5 of 25
lies. end thread
    
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post #6 of 25
I'll leave this here:

its-a-trap-cat.gif
    
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post #7 of 25
if he used whetstones to lap it I could see it working...They go up to about I want to say 6k grit for sharpening chisels and so forth and it is a flat surface..As for thos knife sharpeners just don't see it happening.
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post #8 of 25
The tools pictured in the OP are hones, not sharpeners. Just sayin... There is a difference.

"What is the difference between honing and sharpening? When a typical knife is sharpened, it has tiny microscopic teeth all along the cutting edge. When the knife is used, the teeth and edge gradually flatten out. A honing steel, which looks like a short sword with a round blade, is used to draw those teeth and the metal of the cutting edge back into shape so the edge is keen. The honing steel is not designed to remove metal. If used aggressively, it will do that, but that is not its primary function. A good steel is magnetized to help in drawing the cutting edge back into shape.

Sharpening is removing metal from the cutting edge to remake the edge. The most common sharpening device used to be a whetstone. Now diamond and ceramic rods are available and widely used."

From:http://www.cookswares.com/discussions/honing.asp
Edited by Epitope - 3/14/11 at 7:08pm
    
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post #9 of 25
I use a cheese grater to lap my blocks. It's super effective.
post #10 of 25
I have some DMT diafolds I could see putting a really nice finish on a headsink. The EEF one I have puts a mirror finish on an s30v blade, much higher quality steel than you will find on any heatsink. As far as one of those round ones, no no no.ninja.gif
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