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sharpening convex edges

S

shawn242010

Joined
Sep 14, 2013
Messages
28
Hi I am new to the forum and I am not very good wit technology. I already tried to post this question once but lost it somehow.Last night a friend got stuck in a snow bank.I grabbed my coat and edc knife a Brkt little creek and went to lend a hand.we had some thick rope which I cut to length with my little creek.after we pulled him free the knot was frozen and I again used my little creek to cut it.I was impressed because I had my doubt's that such a small knife would do the trick.It passed with flying colors. I went home proud of my trusty little blade until I tested the edge on some paper just to see and it was dull unable to cut paper.I felt a burr on one side and went to the strop with black then green compound.Only a few strokes on each one and I had a screaming edge again.Only now I do not trust the edge I have.so my question is was the thick rope too much or is it that my edge is to thin ?How do I correct this.Any help would be greatly appreciated thank you
 
shawn242010 said:
Hi I am new to the forum and I am not very good wit technology. I already tried to post this question once but lost it somehow.Last night a friend got stuck in a snow bank.I grabbed my coat and edc knife a Brkt little creek and went to lend a hand.we had some thick rope which I cut to length with my little creek.after we pulled him free the knot was frozen and I again used my little creek to cut it.I was impressed because I had my doubt's that such a small knife would do the trick.It passed with flying colors. I went home proud of my trusty little blade until I tested the edge on some paper just to see and it was dull unable to cut paper.I felt a burr on one side and went to the strop with black then green compound.Only a few strokes on each one and I had a screaming edge again.Only now I do not trust the edge I have.so my question is was the thick rope too much or is it that my edge is to thin ?How do I correct this.Any help would be greatly appreciated thank you
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Much better place to ask this question, the guys here will help you figure this out...

http://www.bladeforums.com/forums/forumdisplay.php/794-Maintenance-Tinkering-amp-Embellishment
 
The factory edge may be just a little too thin but cutting frozen rope if it held up like it did without fracturing then it looks like the heat treat is good. Just stropping it like you did will very slowly "thicken" the edge just so slightly and I wouldn't worry about it. If it really bothers you then maybe just get some 400 or 600 grit sandpaper and strop it at a slightly higher angle (just a few degrees) more than the factory angle and strop on leather with the green compound afterwards.
 
An edge won't raise a burr from cutting a rope. It will just get dull. You probably rolled the edge. A knot in frozen rope is going to be tough on most edges. If that's something you're going to do a lot of, you might want to make your edge a bit less acute.

Your subsequent stropping may have acted more like a steeling than a stropping. In which case, you probably still have a weakened edge.
 
Frozen rope...frozen anything...can be hard on an edge. (no pun)

Trust the edge?? You have a great knife and it sounds like it performed. Over time that edge will get better and better. It's what we do--use the knife, it rolls, bends, dulls, whatever....then we strop it back up to sharp. I don't think you have a problem at all.
 
At some point it was probably exposed to some lateral stress. BRKT grinds many of their knives to a pretty thin convex, great for cutting under controlled conditions, but will not hold up well to lateral force. I had my Necker roll over pretty bad due to lateral loading once, am more careful with it now. You could also slowly convert the cutting edge to a more broad inclusive angle, this will toughen it up too, and being thin behind the cutting edge it will still cut well.

Frozen rope is mighty tough stuff, is not surprising the edge was beat up, especially under less than ideal circumstances.
 
EChoil said:
Frozen rope...frozen anything...can be hard on an edge. (no pun)

Trust the edge?? You have a great knife and it sounds like it performed. Over time that edge will get better and better. It's what we do--use the knife, it rolls, bends, dulls, whatever....then we strop it back up to sharp. I don't think you have a problem at all.
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Thanx for all the answers everyone,it did preform great actually when someone said anyone got a knife my brother inlaw laughed and said i know shawn does.When i pulled it out of my pocket the other guy was like no way that little thing will cut this rope.I had my doubts to but it sailed through the first cut,thick rope at least idk an inch and a half or so.most of the time its for opening toy packaging for my 4 year old or boxes at work ,letters,appls at lunch that kind of thing.I just like to know that was normal.I may fatten up the edge a bit though it would be nice to know if that was all i had on me i could use it a little hard and still have a working edge.I love brkts knives i have 12 just got another highland special may have to return it though.There are sharp edges of the tang coming out from the becote scales,as if they were a little to small.You can see the edges of the tang all the way around and stain or glue on them.First one ive ever had an issue with though
 
shawn242010 said:
Thanx for all the answers everyone,it did preform great actually when someone said anyone got a knife my brother inlaw laughed and said i know shawn does.When i pulled it out of my pocket the other guy was like no way that little thing will cut this rope.I had my doubts to but it sailed through the first cut,thick rope at least idk an inch and a half or so.most of the time its for opening toy packaging for my 4 year old or boxes at work ,letters,appls at lunch that kind of thing.I just like to know that was normal.I may fatten up the edge a bit though it would be nice to know if that was all i had on me i could use it a little hard and still have a working edge.I love brkts knives i have 12 just got another highland special may have to return it though.There are sharp edges of the tang coming out from the becote scales,as if they were a little to small.You can see the edges of the tang all the way around and stain or glue on them.First one ive ever had an issue with though
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Jeeze, man....if you own a dozen Bark Rivers you know all this stuff and that you have a wonderful knife! :playful:
 
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