20 in by Bura
- Thread starter fsmitka
- Start date
- Joined
- Sep 7, 2001
- Messages
- 5,946
Wrong button, eh? 
Might as well start a new topic...
How convex is convex? From the shapes I've seen it can be very curved or rounded to a very slight curve (closer to a flat grind). What are the advantages to either?
Might as well start a new topic...
How convex is convex? From the shapes I've seen it can be very curved or rounded to a very slight curve (closer to a flat grind). What are the advantages to either?
- Joined
- May 18, 1999
- Messages
- 15,395
Originally posted by BruiseLeee
Wrong button, eh?
Might as well start a new topic...
How convex is convex? From the shapes I've seen it can be very curved or rounded to a very slight curve (closer to a flat grind). What are the advantages to either?
Good question Bruise!!!!
The very curved convex edge is for heavy duty work and is what used to be on all the HI Khuk's.
This helps to prevent sticking in the wood when you're chopping.
The slight curve is best on a skinning or butcher knife.
The thinner bevel or very slight curve makes slicing easier.
Some of the old broad axes had a convex edge on one side and a perfectly flat grind on the other for shaping and squareing timbers. These wouldn't be worth a flip for use in chopping down a tree.
Busse uses a similar grind on their blades and they call it an assymetrical edge.The Busse knives are initially flat ground with a small convex on one side and a secondary edge on the other.
I could never get the hang of sharpening them so I made mine into convex edges on both sides.
It's actually a stronger edge than the original Busse and it works for me.
- Joined
- Oct 18, 2001
- Messages
- 20,978
Yvsa = you just made my day...
- Joined
- Sep 7, 2001
- Messages
- 5,946
Does that mean... with a very convex edge one can cut a 5/16 carraige bolt but have difficulty slicing a piece of paper at a shallow angle? And of course the opposite. The thin convex will slice paper at shallow angles but will chip or deform cutting a bolt.
Therefore, something for say general purpose would be something in between.
Yes?
Therefore, something for say general purpose would be something in between.
Yes?
- Joined
- Feb 12, 2001
- Messages
- 4,500
Bruise-- I think in general very obtuse edge angles, whether convex or not, will be more durable while more acute edges will be more efficient in terms of slicing and cutting ability. This also has something to do with the overall thickness of the blade itself, not just the edge. In other words, I think the answer to your question is yes .
-Josh
.-Josh
- Joined
- May 18, 1999
- Messages
- 15,395
Originally posted by BruiseLeee
Does that mean... with a very convex edge one can cut a 5/16 carraige bolt but have difficulty slicing a piece of paper at a shallow angle? And of course the opposite. The thin convex will slice paper at shallow angles but will chip or deform cutting a bolt.
Therefore, something for say general purpose would be something in between.
Yes?
Originally posted by Pendentive
Yvsa = you just made my day...
Pretty much Bruise.
Like everything that is a compromise you lose a little as well as gain a little but general purpose can be pretty dayumed good!!!!
On a side note that's one reason I really like the BirGhorka villagers.
The edge bevels are usually just a little thicker than the polished standard product and a light convex edge is easily put on them with my Grizz belt grinder using a slack belt.
Makes for an excellent general purpose khuk!!!!
Dan, I slipped, but I'm glad I made your day.
That's what happens when I don't run my posts through my e-mail spell checker.