Bevel edge vs convex edge??

Iloveblades

Iloveblades

Joined
Dec 14, 2008
Messages
37
Is one better than the other all the time?Or should some knives have bevelled edges and some convex?If so which knives should have which edges?Is it hard to make a bevelled edge a convex edge?Can you strop a bevelled edge knife?Sorry for all the questions and thanks for all the help.
 
it all depends on what the knife is going to be used for. i like a convex more than i do a bevel for its durability. i find that the convex cuts better too. i put a bevel edge on kitchen knives since most are thin and only take a minute or less to sharpen. its not hard to make a bevel into a convex. i do it quite often. i dont use a strop but my edges are stropped with paper wheels. the knives i make are a chisel grind with a half convex blade. to see how well it cuts check out the video in my sig line.
 
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in my opinion, there are no edges that will be hurt by a convex edge, and a convex edge is a benefit in most cases.

you can strop a beveled edge, it will work well to remove the burr and slightly polish the edge

convex is really just a smoothed out bevel edge. this means that the angle and thickness of the edge matters far more than "type" of edge. a thickly ground convex knife will cut just as badly as a thickly ground bevel edge. it all depends on the primary grind thickness and final edge angle.

watch these videos, it explains it well:
http://www.knivesshipfree.com/pages.php?pID=4&CDpath=0
 
siguy said:
... the angle and thickness of the edge matters far more than "type" of edge. a thickly ground convex knife will cut just as badly as a thickly ground bevel edge. it all depends on the primary grind thickness and final edge angle.
Click to expand...
That sums it up nicely. IMO the decision of whether to run a convex or beveled edge depends on factors unrelated to performance, like ease of maintenance, or merely appearance considerations.
 
I greatly prefer my shallow convex edges. I like how they look and for me are easier to maintain than trying to keep a flat bevel. Are they sharper, last longer, or stronger? I don't think it really matters much at all. You can pretty easily convert a convex to a flat bevel and also easily convert a flat bevel to convex. If you use a jig to sharpen your probably going to want a flat bevel.
 
I find the convex edge to be good most of the time. It seems hold its sharpness during harder use a little longer. I like a flat grind when I'm doing some cuts carving wood and need a chisel type cut or depth control. It's really in the hands of the user.
 
If i were to take 2 delicas, one would be convexed,and the other would be sharpened on the sharpmaker at 40 deg. i dont know if i would to be able to tell the difference.
 
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