Knife Sharpening Systems?

The "next level" of sharpening systems are those with angle control and pressure control. The Ukrainian Bogdan makes an Edge pro like version with pressure control and one for bench stones. The Austrian knife maker Mike Wunderer / wundererameisen makes an upgraded (better angle control for example) version of the one for bench stones called Nowi.

With this system you can lift the handle in order to get the edge and the angle remains constant.


Pictures of the Nowi:

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More info here: https://www.bladeforums.com/threads/stropping-vs-ultra-fine-stones.1646172/page-2#post-18836968
 
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You can move the knife on the stone or you can move the stone on the knife.

If you do not want to chase the edge for a long time look at a system like the Hapstone sharpening systems.
 
I agree that Nowi looks like what I've been looking for
I've been freehanding on stones til now and getting better which I'll keep doing but I'd like that machine or similar for comparison
Anyone know where to get it?
Can't seem to find much online only YT vids of it being used
 
I second the Hapstone Pro, it's a good system with several models depending on your needs. It's also adjustable for a wide variety of stones.
 
John mc c said:
I agree that Nowi looks like what I've been looking for
I've been freehanding on stones til now and getting better which I'll keep doing but I'd like that machine or similar for comparison
Anyone know where to get it?
Can't seem to find much online only YT vids of it being used
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Google the knife maker "wundererameisen" and you will find his website, instagram and facebook and just contact him, he's a very nice guy.

Btw, there is a typo in my first post. I wrote:

"With this system you can lift the handle in order to get the edge and the angle remains constant."

but it should read:

"With this system you can lift the handle in order to sharpen the tip and the angle remains constant."
 
I use an edge pro. I can do hand sharpening on water stones, but I like the consistency of the edge pro. I set my initial edge on a 220x (iirc, I have 100x, and a 320x too, but I like the 220x.) diamond stone, then switch to the edge pro. I have neuropathy, and my hands can get shaky at times. The edge pro solves that problem.

This is worth a read: https://knifesteelnerds.com/2019/04/08/does-sharpening-with-a-grinder-ruin-your-edge/
 
ckdexterhaven said:
Interesting article but one factor the author does not mention: the speed of the belt. I usually sharpen on water stones but out of curiosity I recently sharpened a few cheap knives on my belt grinder at very low speed (below 15Hz) and I really liked the result and the edge was not even a little bit warm so this should be fine?
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Slower is better. How slow do we have to go? We don’t know. Cooling systems help. Sharp belts help.
 
I've used my grinder, but I get a better edge with my knock off edge pro and diamond stones. I don't like how it handles moving towards the tip... The angle of the bevel varies slightly as you move to the tip on most knife geometries.. That Tormek T-8 in the article looks amazing...
 
If you have a knife grinder it is tough to beat a hanging parallelogram and waterproof belts for a relatively fast very high quality edge.

obviously free hand is nice for your own knives, but when you're making them for someone else some people might expect a little bit more consistent than most free hand sharpener can achieve. In a production setting it is helpful to constrain that angle.
 
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ckdexterhaven said:
Interesting article but one factor the author does not mention: the speed of the belt. I usually sharpen on water stones but out of curiosity I recently sharpened a few cheap knives on my belt grinder at very low speed (below 15Hz) and I really liked the result and the edge was not even a little bit warm so this should be fine?
Click to expand...

The point of the article was that even a blade that was kept cool to the touch on a dry belt was still building enough heat to over temper the edge where it is only several microns or less, and it is imperceivable because the heat dissipates so quickly from material that thin. A coolant flood mitigates the heat from friction.
 
Nathan the Machinist said:
If you have a knife grinder it is tough to beat a hanging parallelogram and waterproof belts for a relatively fast very high quality edge.

obviously free hand is nice for your own knives, but when you're making them for someone else people expect a little bit more consistent than even the most experienced free hand sharpener can achieve
Click to expand...
You'd be surprised.
 
DeadboxHero said:
You'd be surprised.
Click to expand...
Yeah you're right. what I should have said was for most people, particularly in a production setting, it is helpful to use something to constrain the angle. Consistent geometry helps keep knives within a pattern consistent, and prevents faceted edge.
 
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