Chamfered edges?

My infi ratweiler has the edges done AzTim stripped one of mine for me. I posted a couple pics in Swamp Rat forum

 

You don't have MASSIVE rusting problems by leaving the decarb on the blade?

 

Without getting crazy in depth. It’s been said that the decarb layer causes or in itself rusts. By totaling removing = much less chance of rust.

 

What duramax said. I've always done my best to get rid of it. And where I don't completely rid the INFI of it, it will almost rust while you are looking at it, it seems. If you go look at the DS6 vs. AD6 thread, on the last page, you can see where I stripped my DS6. After more than an hour of sanding and polishing, it appeared totally clean. I went in, washed it well, and by the time I dried it with a dry towel, places that I hadn't completely gotten clean of decarb were showing red rust. And I mean this took, at most, only a couple of minutes. BACK outside with the Dremel and sanding/polishing. After another about 20 minutes, I thought I was finished. I put it away, thinking I was good to go. About 3 days later, I took it out to photograph to post here, as I had said in that thread I would do. You can see what I found. Some of the decarb had been left in the fuller on one side. It showed red rust. What you see in the photos is after I wiped it, and it only appears black. When I put it away 3 days prior. That fuller looked just as clean as you can see the one on the other side is. You can also see the red rust at the tang, just in front of the Res C. That had been worked extensively. To the point that the Res C has been slightly re-shaped at the front. Not enough to really tell, as I smoothed it pretty good. As tough as ResC is, it won't stand up to rotary sanding (slow speed; no heating of metal... or ResC for that matter). Anyway, just on a whim, I looked at it again this morning before I left for work. I still have some work to do on that really bad spot at the tang. But the fuller is clean on both sides now.

Anyway, all that to say that incompletely removed decarb certainly appears to be phenomenal at rusting....

And I guess I kinda DID go crazy in depth ...

 

I’ve got stripped SR101, bare A2, D2, M2, O1, W1 (or is that W2?), even 1095 that I have no rust problems with, all treated exactly the same, and even stored in the same location as that DS6. The only ones I’ve had any problem with are that DS6 and a SAR5. Both of which exhibited the same sort of spotty rusting where I thought I had it bare but some decarb remained. I had sanded the SAR5 til it had a noticeably thinner blade, and especially thinner behind the edge. I ended up sending it to a guy on the board here that had offered to bead blast it for me. After that, I’ve yet to oil it, and no rust.
Now I’m thinking I need to strip another INFI, leave the full layer of decarb, and see what happens. I can fully believe that the undisturbed layer of decarb could protect the INFI, and not rust. I forget what the chemical composition of the decarb is, but it’s here on the board somewhere.

 

Next blade I strip, I’m leaving it. We’ll see what happens. Bookmarking this thread so I can zombie-fi it whenever that happens (might be a while).

 

IMO....that steel will perform and look better after that decarb layer is sanded off.
Still looks awesome regardless!

 

I'm neither a chemist nor metallurgist, but I have a friend named Google - here is some info from Wikipedia:
Decarburization
The term is typically used in metallurgy, describing the reduction of the content of carbon in metals (usually steel). … The removal of carbon removes hard carbide phases resulting in a softening of the metal, primarily at the surfaces which are in contact with the decarburizing gas.
Incidental decarburization … done during heat treatment or after rolling or forging … the material is only affected to a certain depth according to the temperature and duration of heating. … The decarburized surface material can also be removed by grinding.

So "decarb" is steel with some of the carbon removed, and I'm guessing some other changes as well, some or all of which contribute to increased rust formation.

This makes perfect sense based on the above. I have read where some users say that after the initial edge is removed when the knife is first resharpened, that performance is better - I suppose this makes sense also.

 

I’m gonna do the same. I picked up a Boss Jack CG. I started the etching process and will strip it next. I intend to leave the decarb and see what happens. I’ll start a thread about it with pics. Just a heads up Dogboye. Keep an eye out for it. Maybe Sunday night.