Which Stone

A

Aerosmith101

Joined
Oct 28, 2018
Messages
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I'm going to be getting a new sharpening stone and I've narrowed it down to the Suehiro Cerax 1000 and the Pride Abrasives 1000 I just need help deciding which one to get, I sharpen a wide range of steels ranging from cheap Chinese kitchen knives to my S30V Griptilian
 
I presume he means what coarse and finishing stones will you be using in conjunction with the medium grit stone you intend to acquire?
 
Mr.Wizard said:
I presume he means what coarse and finishing stones will you be using in conjunction with the medium grit stone you intend to acquire?
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Before it will be a DMT coarse and and after it will be a Spyderco UF followed by stropping, I'm probably going to replace the DMT later on with a waterstone.
 
I would avoid the 3 micron spyderco UF on s30v or other high Vanadium steels. This will likely cause carbide tear out. You will want to use diamonds around 3 micron instead.

Diamond will be faster in general with these steels. As it's harder than the carbides in the steel. While the ceramic isn't as hard, it will still work, just clean the stones when they load up with black streaks. Waterstones in general may take even longer on s30v etc.
 
Mo2 Mo2 Unlike abrasives with small particles that could get between carbides and erode the matrix, solid ceramics have large grains that stay in place. I do not think these large grains with flattened tops will be able to get between PM carbides and erode the matrix. Are you aware of information to the contrary?
 
Mr.Wizard said:
Mo2 Mo2 Unlike abrasives with small particles that could get between carbides and erode the matrix, solid ceramics have large grains that stay in place. I do not think these large grains with flattened tops will be able to get between PM carbides and erode the matrix. Are you aware of information to the contrary?
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I'd still avoid it. Most of the threads focusing on CT is referring to the UF stones.
 
Mo2 said:
I would avoid the 3 micron spyderco UF on s30v or other high Vanadium steels. This will likely cause carbide tear out. You will want to use diamonds around 3 micron instead.

Diamond will be faster in general with these steels. As it's harder than the carbides in the steel. While the ceramic isn't as hard, it will still work, just clean the stones when they load up with black streaks. Waterstones in general may take even longer on s30v etc.
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I haven't had any problems with carbide tear out, I know waterstones will take longer but in my experience the diamond stones have to be cleaned ALOT because they load up so fast
 
Save up for a bonded diamond/cbn stone? I know that's not the question here. I don't have any experience with either of those stones. I've flirted with the idea of mixing some waterstones into my progression, and I have dabbled with some SiC, but ultimately I've decided to save up and spend more on the super abrasives. I like the comfort of knowing the stone will handle anything I throw at it, without question how much burnishing is occurring. 100% cutting, crisp apexes.
 
Forget stones, go with diamonds all the way. Stones are too soft to cut the extremely hard vanadium/niobium carbides in powder steels.
 
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