Pocket sharpener angle

O

olddogrib

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Apr 18, 2011
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I have a couple Lansky pocket "mini-crock stick" pull-through type key-chain sharpeners (Part #LCKEY) that I mainly use in tackle box, etc, for touching up fillet knives when cleaning a bunch of fish. The best I can measure the angle on these things with an inclinometer is approx. 35 deg. inclusive. Does that sound about right? If so, that round be about 17.5 deg. per side. That's pretty tight...but would explain why it does the job on thin blades, but not that great on all my other thicker blades that I generally sharpen to 20-25 deg. I have a Rapala somewhere that I haven't measured, but it seems to be less acute.
 
Haven't looked but I seem to remember my Rapala had a convex blade edge which would make sense to get between the fish skin and flesh and lift it up and off. It would also make a fixed angle pocket sharpener ineffective.
 
olddogrib said:
I have a couple Lansky pocket "mini-crock stick" pull-through type key-chain sharpeners (Part #LCKEY) that I mainly use in tackle box, etc, for touching up fillet knives when cleaning a bunch of fish. The best I can measure the angle on these things with an inclinometer is approx. 35 deg. inclusive. Does that sound about right? If so, that round be about 17.5 deg. per side. That's pretty tight...but would explain why it does the job on thin blades, but not that great on all my other thicker blades that I generally sharpen to 20-25 deg. I have a Rapala somewhere that I haven't measured, but it seems to be less acute.
Click to expand...
Hi
If you want a higher angle (and blade fits) dont swipe down the middle, tilt blade
lansky-mini-sharpener-lckey-22dps.png

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CAP55 said:
Haven't looked but I seem to remember my Rapala had a convex blade edge which would make sense to get between the fish skin and flesh and lift it up and off. It would also make a fixed angle pocket sharpener ineffective.
Click to expand...

Ineffective why? Only the angle matters
 
On a convex grind the symmetry of the blade edge will not allow the apex to be sharpened by a V shaped pull through, unless you want to pull through enough to grind off the convex curve. Just use a stone or diamond plate but practice first, convex grinds are not that easy to get right. I usually pull the blade spine to edge rather than push edge to spine for convex sharpening.
 
I'd also suggest ditching the pull-through - they're much too limiting in how they work, for the angle & geometry issues at least and for other reasons as well. And the ceramic versions won't be aggressive enough for anything but very minor touchups and microbevelling.

As mentioned, a simple diamond hone in maybe ~600 grit would be nearly universal for most uses and situations. Get aquainted with one of those, and never look back.
 
Last edited:
Pull-through Lansky "sharpeners" (note quotes) are 40 to 60 degrees inclusive.
I asked Lanskey a couple years ago.
 
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