What's the deal with those blocky interrupted resin bonded diamond stones?

[palindrome]

What's the deal with these blocky interrupted resin bonded diamond stones? I noticed they are are cheap, probably because they are made of the same material as fairly common angle grinder discs. Do these work for thinning or reprofiling knives? (Obviously this wouldn't be good for the edge, but perhaps the bevel.) It seems like the ones that are marketed for knives are uninterrupted, but does anybody use these?

 

[blokey]

Not sure where you found it, those are sold by Fei Duan/Hua Xia Di(飞段/华夏砥） as far as I know, they are used as stone flatterers rather than actual stone.

 

[blokey]

Links just in case
【淘宝】https://m.tb.cn/h.UCq1kd6?tk=01H4dKNblVa

 

[palindrome]

Thanks... Indeed I found it on taobao, along with a ton of similar listings. If nobody knows whether this could work as a stone, I may get a cheap one to try.

@blokey would you say that's a good brand? I'm never sure what sellers actually have quality and reputation since everyone pays to have their reviews brushed (or rather, faked). Thanks!

 

[blokey]

Thanks... Indeed I found it on taobao, along with a ton of similar listings. If nobody knows whether this could work as a stone, I may get a cheap one to try.

@blokey would you say that's a good brand? I'm never sure what sellers actually have quality and reputation since everyone pays to have their reviews brushed (or rather, faked). Thanks!

It’s a fine brand for their price, they are one of the older and actually good Chinese whetstone brand, just don’t expect miracles, they won’t stand up to Shapton or Choceras

 

[Blank Blades.]

I don't think they will work for a knife.

I have some discs made with a similar looking bonded diamond abrasive. And they just don't break down like you would want them to for grinding or polishing steel.