Help to understand Scandivex Grinds

I think it's more like this. The scandi grind is on the left, a scandivex on the right.
 

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There are a couple variants.

scandivex.jpg


Most often the edge has been convexed, but also some folks convex the edge and round off the "junction" between the unground portion of the knife (A) and the ground portion (B).

I suppose one could leave the edge a vee and just round that junction....
 
I put a mini convex edge on my scandi grinds to minimize the edge chipping I used to occasionally get with a zero grind.==KV
 
RX-79G said:
At the most basic, it is a Scandi with the corners and edges rounded off.
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I'll have to disagree. A Scandi with the shoulders rounded would be a full convex grind. I think a "scandivex" would have to preserve the shoulders for it to qualify as a Scandi, and the bevel be convexed to a zero edge. The convexity of the grind should begin at the shoulders and proceed to the edge leaving an appreciable "flat" above he shoulders.
 
kniferbro said:
I'll have to disagree. A Scandi with the shoulders rounded would be a full convex grind. I think a "scandivex" would have to preserve the shoulders for it to qualify as a Scandi, and the bevel be convexed to a zero edge.
Click to expand...

How can you "convex to a zero edge"? A zero grind is not convex. Zero grind means the bevel continues to the edge, and convex means there is no bevel. A bevel is a flat surface.
 
RX-79G said:
At the most basic, it is a Scandi with the corners and edges rounded off.
Click to expand...

kniferbro said:
I'll have to disagree. A Scandi with the shoulders rounded would be a full convex grind. I think a "scandivex" would have to preserve the shoulders for it to qualify as a Scandi, and the bevel be convexed to a zero edge. The convexity of the grind should begin at the shoulders and proceed to the edge leaving an appreciable "flat" above he shoulders.
Click to expand...

IIRC, "Scandivex" is a term coined by the folks at Bark River and introduced on their Scandi model. It is, as RX describes, a Scandi grind with the shoulders rounded off.

brk-scd-amwali__94426.1419607236.1280.1280.jpg
 
pinnah said:
IIRC, "Scandivex" is a term coined by the folks at Bark River and introduced on their Scandi model. It is, as RX describes, a Scandi grind with the shoulders rounded off.
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yeah...that Mike Stewart just seems to invent everything. :rolleyes:

The term was around before he "invented" it. And its not just the shoulders rounded off. Its the shoulders rounded and the edge convexed.

That said, I neglected to include another very common variant. In my pic below, you have the unground portion from the spine to A. And then A to B is convexed....like the my pic.

Real easy to make. Take some flat stock, and put it on the belt sander.
 
browningsilver said:
I didn't know until a few days ago that Scandivex Grinds even existed. Does anyone have a crosscut image to help me understand it similar to the one below?

http://s143.photobucket.com/user/SeekHer/media/5d554029.jpg.html

Thanks!
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As you sharpen over time on a stone, the convex shape delvops on the bevel due to the back and forth grind making a slight " rocking"motion.

The Bark River "scandivex" is the same but more exaggerated with smooth rounded sholders due to being shaped on a slack belt grinder.
 
browningsilver said:
How does one best sharpen such an edge?
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Easy! Either freehand, where you dont worry about maintaining the exact same angle on each stroke, or on something like wet/dry sandpaper on a slightly soft substrate (like cardboard or mouse pad). I just put the sandpaper on my strop (hunk of leather glued to a 2x4).

The great thing about it is that it takes advantage of "poor" technique.
 
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