Is my blade steel to soft?

K

Knife Viking

Joined
Jan 23, 2010
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So, I have a new custom flipper in CTS204P that is only a month old. Well all of the sudden the detent ball started cutting the steel in its path. It rant extremely rough for a bit than stopped. Now there is a path that the tip of a needle gets caught on. Also, when I sharpen the blade on the corner of the white stone on the sharpmaker, one swipe puts the burr to the other side completely. I did a comparison with a much older flipper in s30v, and the detent path is not detectable. It goes without saying that s30v doesn't act that way when sharpening. So, is my steel to soft? Thanks ahead for any help.
 
its possible. maybe you need to contact the maker and tell him about it. that might be your best bet. if you are curious as to the rc hardness of the blade, i can get it tested for you.
 
I should have mentioned that the maker is ready to take care of it. I really want to see if this is possibly inherent to these high cromium steels like m390,204p. I just hate extra shipping of $1000 knives, but I suppose its worth it to know the HRC.
 
Without a picture + more details. I guess the word 'corner' could imply too much pressure per small area, so the edge rolled rather than grind-up a burr. M390/204p steels - even - in annealed state, it's not easy to raise burr with 1 proper sharpening stroke.
 
if you want to see for yourself if the blade is hard or not you can do a simple test with a fine file (like a needle file for example). see if the file can cut the edge easily but do it back by the sharpening notch or by the kick. if the file cuts the steel then chances are the heat treat is not up to par.
 
richard j said:
if you want to see for yourself if the blade is hard or not you can do a simple test with a fine file (like a needle file for example). see if the file can cut the edge easily but do it back by the sharpening notch or by the kick. if the file cuts the steel then chances are the heat treat is not up to par.
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Thanks for the advice, I happen to have a set of Swiss made needle files. To answer the other posters question I should have said the edge is rolling with a fairly light swipe on the Spyderco Sharpmakers fine stone, and using the corner. I am hoping its normal, because the edge holds up well. The main thing that worried me was how fast I would assume a 440C detent ball cut a path in the steel. I will probably just take advantage of sending it back to the maker. That way he can check the actual hardness, even Phil Wilson said that it took a couple of tries to hit his mark with m390.
 
The corners of the triangle stones will form a burr by deforming the edge pretty easily. One has to be quite careful to avoid this. For this reason I rarely use rhe corners anymore.
 
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