Spyderco 306UF vs DMT Extra Extra Fine?

[hardheart]

the medium ceramics can wear from sharpening, they are fired differently, but it still isn't a fast process. You can also lap the ceramics with SiC, but you better have some free time and aspirin. I do like how bright the UF can make an edge with the burnishing, but you really need to see what it is you like in the stones you use and decide if you want ceramic or diamond. I have diamond, sintered ceramic, waterstones, etc just cause I like to play around. I have a full set of DMTs, the rest are piecemeal.

 

[BluntCut MetalWorks]

... a ceramic hardly wears, doubt you could dish it, and if you can find stone build-up from a UF ceramic then I would love to see that picture.

You are right, I couldn't dish/wear my 302F after I grinded my BM 940 s30v bevel shoulder against the stone edge using alot of pressure for 10 minutes. I couldn't clean the stone using BKF but was able to cleared all deposit by using a flat river rock. Interestingly, that area of the stone lost most of its cutting ability, it mostly burnishes the other shoulder of the blade.

So, back to my earlier question. 1)Which is the key abrasive component when using a ceramic stone - ceramic or alumina or both?

2)Does alumina on stone surface will be rounded/cut off by hard carbide such as Tungsten and Vanadium carbides?

3)Could this be the reason why I keep flatten my stone to expose new alumina cutting surfaces?