BAD Concern

I heard from tbe buyer and he tells me he bought it brand new and doesn't really remember if he used it to prepare food, said he did use and carry though! Said he only sharpened on a sharpmaker. I have no reason to believe otherwise so am going to put it down to a patina and this being accelerated / worsened by the leather and humidity!

How would I tell if the temper was ruined?

The best way to gain knowledge about temper is to have a mix of knives that will show you what the difference is ....

I suggest you buy a cheap diving knife .... they are usually made from the cheapest stainless with the priority being it will not rust and the Rc is low and the steel comparatively soft .... akin I suppose to normal cutlery we use as knife and forks .... try then to put a good edge on it .... I find such steel very illusive on developing an edge .... you get so far but cannot get it to take a razor sharp edge .... it defeats you ...

Then try your BAD .... Infi sharpens very easily .... if it takes a razor edge no problem then the steel is at least not too soft and you have no worries about the temper ....

The higher Rc setting of the BAD if it is Rc62 will mean it is slightly longer to get the edge right .... I have a lot of knives at Rc 62 and some at Rc 64 .... the trick here is not to be shy when sharpening these .... otherwise you get no-where .... and can confuse yourself as to whether something is wrong .... but using low grits or diamond stones to develop the edge and then only going to the higher grits to polish the edge .... the edge should last longer than your other Infi and being thinner it will cut more easily and the edge should'nt roll .... a common problem if you take an acute angle to develop a quick razor edge ...

Occaisionally you can have a knife that has been tempered and not cooled properly so it can have brittle steel .... that only comes from the manufacturer process .... it can then chip out easily or snap .... but will take a good edge .... if the knife loses a chunk from the edge when batonning .... that is usually a brittleness from the heat treatment .... then you have your warranty to fall back on and why Busse's are worth it ....:thumbup:
 
I agree with it looking like patina.
Have you tried the flitz yet?That stuff works wonders.
 
Jerry has said that it takes 900F to affect the temper of INFI. :eek:

Since the edge does not appear to have had extensive work, i think we can eliminate the idea of heat damage from grinding. Combined with the seller saying he only used a Sharpmaker, then it must be some patina.
 
I'm glad it seems unlikely to be a temper issue. Patina only adds character so does not phase me. Thanks for all your input, I need to find another Busse that's as close to perfect as this BAD and Badass sheath!
 
Sure looks like someone but it on a belt grinder, and got it to hot....I would send it back to whom ever you bought it from and look for me another blade.
 
Sure looks like someone but it on a belt grinder, and got it to hot....I would send it back to whom ever you bought it from and look for me another blade.

No way that knife has been on a belt grinder,look at the grain in the steel,it all matches up.Only way that could be if a belt was used on it would be to have ground the whole blade.From the looks of the logo that did not happen.
 
Sure looks like someone but it on a belt grinder, and got it to hot....I would send it back to whom ever you bought it from and look for me another blade.

I disagree fella. As stated above the knife looks new, the edge is like factory and there is no other reason that hints at the contrary!

17 posts and we're all experts I suppose!
 
No way that knife has been on a belt grinder,look at the grain in the steel,it all matches up.Only way that could be if a belt was used on it would be to have ground the whole blade.From the looks of the logo that did not happen.

Not to mention that there's not enough steel on a BAD to do a full regrind without it being very noticeable.
 
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