- Joined
- Jun 6, 2000
- Messages
- 3,625
I posted to the group about the plus and minus points of 154CM and CPM440V.
PLEASE DON'T SEND THIS TO REVIEWS AS THIS IS A CONINUATION OF A POST IN GENERAL.
Well my LCC had a bit of trouble with a dry bag of dog food, causing the edge to dull in a small spot.
Well I steeled the blade a couple of times before starting. The edge had its factory edge and has been steeled up and down a ribbed steel about 15 times each side it total. The edge has never seen the use of a hone etc, just the steel.
The edge was between hair slicing and hair scrapeingly sharp before I started.
I tested the edge on a bit of Amazon double layer package cardboard. The cardboard is clean with no grit in it.
Holding a section that was roughly 80cm long by 45cm high I began to make 30-35 cm slices downward. I did this by pushing the tip in and very vigourasly pulling the edge through the cardboard with an even motion. The edge was pulled out so the cardboard was cut to the end with the very tip not being used to cut (last 1cm or so nearest the tip did not come into contact with cardboard.). The only reason for this is I did not want to have to go back and finish the cut with a second attempt. I started the cuts both from the near tip and near tang of the knife so as to assure myself that both ends of the blade got a fair and equal use.
To be clearer, half the cuts started near the tip pushing the blade INTO the material when pulling it down. The other half starting with the blade pushed all the way in the cardboard and pulling back while going down. Both cuts started at least 1cm away from the tip and choil of the knife.
I tried to keep a 3cm gap between the cuts.
I have counted roughly 30 or so cuts at roughly 30cm (on the side of caution).
So given my sums, this equals 900cm of cutting or 9M. Well after this, the edge did feel slightly less sharp. The edge still shaved, but not as well as before. Now it only scrape shaved. It still sliced paper equally as well as before, very cleanly. Inspection of the edge showed two spots of about .5 of a mm where the edge was now dull and showing under the lamp light. These two points are where I started the very powerful pulling action at the front and back of the knife. It stands to reason that this is where the most stress was applied to the edge, the cutting action thereafter making the same level of power application difficult. The blade cut like the Devil from the start and I noticed a very very slight drop in performance towards the last 5 cuts.
I have re-steeled the edge and it feels very slightly sharper, but only slightly. The two dull spots on the edge have not steeled out, but I have been very light with the steel and I think I could steel the edge more if I tried. Unless this is a point where the edge has fractured rather than folding, in which case I will need to rehone to bring it back. The two spots are so hard to see and so slight I am unconcerned. Experience has shown me that ten passes on a fine stone on my sharpmaker would remove these dull spots. They are that slight. I am very reluctant to try steeling any more as It will probably remove the shaving edge performance that remains on the edge. By this I mean it has been my impression that a steel does not give you such a fine shaving edge as using a very fine ceramic stone. Perhaps I am wrong? Cliff? Also it seems a great shame to re-cut an edge, when it is still very functional!
Whew!
Hope it helps!
------------------
Wayne.
"To strive to seek to find and not to yield"
Tennyson
Ranger motto
A few useful details on UK laws and some nice reviews!
http://members.aol.com/knivesuk/
Certified steel snob!
PLEASE DON'T SEND THIS TO REVIEWS AS THIS IS A CONINUATION OF A POST IN GENERAL.
Well my LCC had a bit of trouble with a dry bag of dog food, causing the edge to dull in a small spot.
Well I steeled the blade a couple of times before starting. The edge had its factory edge and has been steeled up and down a ribbed steel about 15 times each side it total. The edge has never seen the use of a hone etc, just the steel.
The edge was between hair slicing and hair scrapeingly sharp before I started.
I tested the edge on a bit of Amazon double layer package cardboard. The cardboard is clean with no grit in it.
Holding a section that was roughly 80cm long by 45cm high I began to make 30-35 cm slices downward. I did this by pushing the tip in and very vigourasly pulling the edge through the cardboard with an even motion. The edge was pulled out so the cardboard was cut to the end with the very tip not being used to cut (last 1cm or so nearest the tip did not come into contact with cardboard.). The only reason for this is I did not want to have to go back and finish the cut with a second attempt. I started the cuts both from the near tip and near tang of the knife so as to assure myself that both ends of the blade got a fair and equal use.
To be clearer, half the cuts started near the tip pushing the blade INTO the material when pulling it down. The other half starting with the blade pushed all the way in the cardboard and pulling back while going down. Both cuts started at least 1cm away from the tip and choil of the knife.
I tried to keep a 3cm gap between the cuts.
I have counted roughly 30 or so cuts at roughly 30cm (on the side of caution).
So given my sums, this equals 900cm of cutting or 9M. Well after this, the edge did feel slightly less sharp. The edge still shaved, but not as well as before. Now it only scrape shaved. It still sliced paper equally as well as before, very cleanly. Inspection of the edge showed two spots of about .5 of a mm where the edge was now dull and showing under the lamp light. These two points are where I started the very powerful pulling action at the front and back of the knife. It stands to reason that this is where the most stress was applied to the edge, the cutting action thereafter making the same level of power application difficult. The blade cut like the Devil from the start and I noticed a very very slight drop in performance towards the last 5 cuts.
I have re-steeled the edge and it feels very slightly sharper, but only slightly. The two dull spots on the edge have not steeled out, but I have been very light with the steel and I think I could steel the edge more if I tried. Unless this is a point where the edge has fractured rather than folding, in which case I will need to rehone to bring it back. The two spots are so hard to see and so slight I am unconcerned. Experience has shown me that ten passes on a fine stone on my sharpmaker would remove these dull spots. They are that slight. I am very reluctant to try steeling any more as It will probably remove the shaving edge performance that remains on the edge. By this I mean it has been my impression that a steel does not give you such a fine shaving edge as using a very fine ceramic stone. Perhaps I am wrong? Cliff? Also it seems a great shame to re-cut an edge, when it is still very functional!
Whew!
Hope it helps!
------------------
Wayne.
"To strive to seek to find and not to yield"
Tennyson
Ranger motto
A few useful details on UK laws and some nice reviews!
http://members.aol.com/knivesuk/
Certified steel snob!
