How To

T

Tar18

Joined
Oct 3, 2012
Messages
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Hi folks. I made a mistake when sharpening a small neck knife when I first got my Lansky 5 stone kit. I thought that the 30 was 15 a side but was corrected by the folks on this board and want to thank you for that. Now that I understand what it is and got an Angle Cube, I am ready to fix what I messed up.
Now when bringing the edge down to around the 15 degrees on each side, how do I start?
Is this called "reprofilling"? Now this is not an expensive knife so a good one to learn this on. I want to do this the right way and learn at the same time.
I could use all the help from you folks to help me understand this and do it the right way.
Regards
Tar :)
 
The 30 degrees is really probably only like 27 or 28. This will be a big process to change the angle to less degrees. Start with the most course stone you have and go untill you get a bur. The flip, debur and repeat. Progress through all the stones with the same process.
 
Thanks 115Italian. I am assuming that I would make sure that I am sharpening on the angle that I would want to end up with. Or in other words I would be using my 15 degree angle while I go through all of the stones.
Thanks again
Regards
Tar :)
 
Tar18 said:
Thanks 115Italian. I am assuming that I would make sure that I am sharpening on the angle that I would want to end up with. Or in other words I would be using my 15 degree angle while I go through all of the stones.
Thanks again
Regards
Tar :)
Click to expand...
Hi,
Yes, that would work
but it goes a little faster if you're always grinding on the shoulder,
so if prev angle was 30,
grind at next available angle (ex 29.5)
and ~1-3 minutes later ,
drop down to next available angle (29)
... until you get to your target angle
its not needed to apex/raise a burr at every angle drop,
as you can gauge/measure progress
by marking edge with permanent marker and grind until close to apex, almost no marker visible
also use lube on the stone (ex water...)
ref Reprofiling/Sharpening CPM 3V? - Spyderco Forums , Reprofiling/Sharpening CPM 3V? - Page 2 - Spyderco Forums
 
Hi. Thanks again Bucketstove. Now I know what to do the right way. I will also do some reading on the refer that you put down in your answer. It is a cheaper knife so perfect to learn on.
Thanks again for all of the help.
Regards
Tar :)
 
I wouldn't try to do too much at once. It's not too bad to try to change the angle by a fair amount. Like going from 25 to 20 dps. But if you try to do a TON at once, it's much harder. Both psychologically, and mechanically. Do it in stages and it should turn out well.

Brian.
 
I too would do it in stages... easiest way is to use the settings on the Lansky... go to the next lowest angle below 30 deg. and work it till you almost apex, then the next lowest, etc.

Also, make sure you document how you place the knife in the clamp, so if you take it out, you can put it back in the exact same spot.

In reality though, I think you’ll find it to be a challenge for the small stone of the Lansky. A better approach would be to get a large coarse stone, (or even coarse sandpaper on a flat surface), and use that to do the majority of the “grunt” work. You can then return to the Lansky and finish up the sharpening (if you haven’t decided by then that freehand might be more fun). There are options avail. to help control the angle if needed. This to me, would be a better learning process, and although it might take a bit more practice... I think you’d benefit more from the learning experience.
 
Thanks again folks for all of the helpful hints. I think that I might give what cbwx34 says above a try. I might just learn more and that is great. :) I have been using my Lansky and it is slow but I have been checking with the black marker trick to see what is happening. I think it is getting closer but still needs more work.
Thanks again folks for the help.
Regards
Tar :)
 
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