Centofante 4 and VG-10 dragonfly blade profile question

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rc51kid

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Dec 7, 2009
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I got two new Spydercos for Christmas and love them both. A Centofante 4 and a white VG-10 dragonfly. But I have a question about the shape of both blades. The Centofante has the whancliffe blade. Is the cutting edge supposed to be perfectly straight from end to end? If I put mine on a straight edge or a piece of glass the last ½ inch curves up very slightly. Is this normal? Does anyone else’s have a little curve at the end?
The dragon fly is a little harder to explain. If you follow the ground cutting edge from point to grip it makes a slight bell in a convex shape. But the very last .5mm or so of the edge hookes down making a very slight concave are right where the edg ends. I assume this might be normal manufacturing variance but my older AUS-8 dragonfly doesn’t have this. Also the curve on the blade of the dragon fly does not appear to have the same even contour that my other one does. If you look at the blade where there is a smudge in the picture the contour straightens out a little. Instead of a nice even convex shape to the cutting edge it actually gets a little straight between the two smudges that look like scrapes. I know this is a little confusing, sorry. Is this normal for the VG-10 blade?
Maybe this picture will show the two areas i am talking about.
1202-0001.jpg
 
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Both of those things are pretty much normal. The final sharpening is done by hand on a belt grinder, so there is some small variance between knives. If you sharpen carefully, both of those spots will soon be gone.
 
Thanks, that’s all I wanted to know. Both knives are intended for everyday use so cosmetics are not really a big deal. But I just like things to be correct from the get go. The strange thing is that I even notice this stuff. I cant believe how picky (or obsessive?) I am getting over the years. What kind of idiot (me) holds their knifes blade to a straight edge to see if it is straight? I guess I just need to shut up and start using them.
 
rc51kid said:
What kind of idiot (me) holds their knifes blade to a straight edge to see if it is straight?
Click to expand...

Gee, did you really have to say that? Now I'm gonna have to do it and of course I'll have to find something to test the straight edge against to make sure it's really straight. Thanks a lot.:rolleyes:
 
When you sharpen the C4, sharpen it as if the edge were perfectly straight. When I "checked" my Spin's edge's straightness by placing it flat on a table, I, too, discovered some slight curvature. I made the mistake of trying to follow that curvature instead of just flattening it out, and now I'm going to have to do some work to fix it up...
 
rc51kid said:
The strange thing is that I even notice this stuff. I cant believe how picky (or obsessive?) I am getting over the years. What kind of idiot (me) holds their knifes blade to a straight edge to see if it is straight? I guess I just need to shut up and start using them.
Click to expand...

It's a good thing none of us are obsessive about tiny details with our knives. That'd just be silly. ;)

I am a big wharncliffe fan. It had never occurred to me to test the edges with a straight edge. I'm sure I'll start doing that before long!
 
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