okay this is the thrid time this has happened to me. I just had the blade replaced by BM because the blade keep chipping. Now I was looking at the blade and noticed again the blade had some nics in it. What is going on here? I think I'm just expecting to much of this blade. i love the axis lock. Can you guys suggest a different steel or knife? I like the BMs. I've had a 710 in M2 maybe I need another? Or how about the 806D2. What do you think?
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BM735 blade Chipping
- Thread starter Knife11
- Start date
Thank you for your suggestion on the M2.
But your suggestion that I use my knife on wire and to turn screws is unfortunaly wrong. I also noticed how my post could have been misunderstood. When I said this was the thrid time I ment the thrid time I notice the nics in the blade not the thrid time I replaced it.
So do you (anybody) recomend M2 over D2??
But your suggestion that I use my knife on wire and to turn screws is unfortunaly wrong. I also noticed how my post could have been misunderstood. When I said this was the thrid time I ment the thrid time I notice the nics in the blade not the thrid time I replaced it.
So do you (anybody) recomend M2 over D2??
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M2 is a lot tougher than D2. If you are chipping blades you should head away from D2 not towards it. In the Benchmade line M2 is your best bet.
Cliff Stamp
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Knife11
That could very well be, what are you doing to damage the blade?
-Cliff
That could very well be, what are you doing to damage the blade?
-Cliff
Cliff Stamp
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Knife11 :
Used carpet can contain small rocks and other debris which is likely to damage any knife. On stainless ones like the 735 which is 154CM (ATS-34), it will chip it readily. On the more durable steels it will dent and roll the edges. So in short for such work, yes M2 would be more durable, as Jeff noted D2 isn't a good choice, it is one of the more brittle tool steels.
If the carpet is new, then it should not chip the blade and cardboard and plastic should not be a problem either. This assumes of course you are not cutting into very thick plastic and then twisting heavily on the blade, which from your description does not seem to be the case. So if this is the case the blade is likely defective.
You can also try putting a slightly more steep bevel along the edge. It doesn't need to be very wide, about half as deep as the chips you see would be fine. Use something decently obtuse like 25-30 degrees and then even ATS-34 becomes decently durable. The loss in cutting ability won't be high as long as the bevel is kept rather narrow.
-Cliff
Used carpet can contain small rocks and other debris which is likely to damage any knife. On stainless ones like the 735 which is 154CM (ATS-34), it will chip it readily. On the more durable steels it will dent and roll the edges. So in short for such work, yes M2 would be more durable, as Jeff noted D2 isn't a good choice, it is one of the more brittle tool steels.
If the carpet is new, then it should not chip the blade and cardboard and plastic should not be a problem either. This assumes of course you are not cutting into very thick plastic and then twisting heavily on the blade, which from your description does not seem to be the case. So if this is the case the blade is likely defective.
You can also try putting a slightly more steep bevel along the edge. It doesn't need to be very wide, about half as deep as the chips you see would be fine. Use something decently obtuse like 25-30 degrees and then even ATS-34 becomes decently durable. The loss in cutting ability won't be high as long as the bevel is kept rather narrow.
-Cliff
Cliff Stamp
BANNED
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- 17,562
For durability you want a simple steel like L6, 5160 and the like. Hawkbills are interesting for every day use, I had a great one by Neil Blackwood. No you can't stab with them, but the point penetrates easily under pressdowns. Their strength is mainly a matter of how much metal is left at the tip, Spyderco makes some really thin ones.
-Cliff
-Cliff
Knife 11,
I would not expect a whole lot of difference in the tendency of the Benchmade steels to chip at the Rc hardness levels listed in their catalog (58-60 for 154CM, 59-61 for D2 and 60-62 for M2). I would guess that M2 would hold up a little better than D2 or 154CM, but if you are getting a lot of chips with 154CM, you probably will get a few M2 as well.
Unless you got stuck with multiple defective blades, most likely the edge angle is too acute for the type of cutting you are doing, as Cliff suggested.
Powdered metal steels such as S30V should chip less than 154CM. S30V also will hold an edge longer than 154CM. If you dont need a stainless steel, CPM 3V should chip much less, than either, with edge holding comparable to S30V.
-Frank
I would not expect a whole lot of difference in the tendency of the Benchmade steels to chip at the Rc hardness levels listed in their catalog (58-60 for 154CM, 59-61 for D2 and 60-62 for M2). I would guess that M2 would hold up a little better than D2 or 154CM, but if you are getting a lot of chips with 154CM, you probably will get a few M2 as well.
Unless you got stuck with multiple defective blades, most likely the edge angle is too acute for the type of cutting you are doing, as Cliff suggested.
Powdered metal steels such as S30V should chip less than 154CM. S30V also will hold an edge longer than 154CM. If you dont need a stainless steel, CPM 3V should chip much less, than either, with edge holding comparable to S30V.
-Frank
